Astronomy multiple choice MCQ trivia about planets, moons, space planes, and astronomers. Have fun with this astronomy trivia and get a grade for your trivia knowledge. Check out these astronomy trivia questions and learn a great deal you don’t know about space, the solar system, and the stars around us without multiple choice quiz MCQ trivia.
Test your knowledge of planets, stars, moons, galaxies, our solar system, galaxies, and more astronomy trivia multiple choice MCQ. Try answering these 100 MCQ astronomy trivia multiple-choice questions. From a bar of clouds to the search for more water from the moon, outer space is constantly astonishing us, as this fascinating space proves the information.
Looking for an astronomy multiple choice MCQ trivia? Test your knowledge with our quiz list of astronomy trivia multiple choice MCQ questions and answers. However, much of what we know is mind-boggling. The truth of these five astronomers can only change the perspective of your time on the basis of the objective-based multiple choice quiz MCQ.
100 Evergreen MCQ Astronomy Multiple Choice Trivia Questions
How long will it take for thew footprints on the moon to be erased naturally?
How fast can a neutron star spin?
Which planet in our solar system has the largest number of moon?
All matter pulls all other matter towards it, this pull is what we call
Apart from the sun, which star is the closest to the Earth?
Light year means
How old is the universe?
When was the first space station launched?
What is the name of the first space station launched?
Which is the largest moon in the solar system?
Which planet has the largest moon ever?
What is the largest volcano in the entire solar system?
When was the first liquid fuel rocket launched?
What was the biggest asteroid hit ever witnessed?
How many times the Olympus Mons is higher than the Mount Everest?
How much rock was brought back to earth by the Apollo mission?
Who first proposed that the sun is the center of the solar system?
What is the length of a day on Mercury?
Where do basically your feet would be pulled faster toward the black hole than your head which means you would stretch and stretch until shredded with the term 'spaghettification'?
Does the Sun move?
What describes the likelihood of extraterrestrial life?
Which of Saturn's moons has seas of methane?
Charged particles from the solar winds slowing down in our atmosphere that results
The Sun's magnetic field goes through a cycle, called the solar cycle the Sun's magnetic field completely flips in every
What is the largest known meteorite crater on earth?
Which of the following planet doesn't have ring around it?
What is a Extrasolar planet?
How old is the sun?
How far is the moon away from the Earth?
When you go into the space, what happens to you?
What is the strongest known magnet in the Universe?
A phenomenon when the crust of a neutron star undergoes a sudden adjustment is called?
Which is the hottest planet in the solar system?
Which planet is the largest of the terrestrial planets?
Which planet is known as the morning star?
How long is the sidereal day of the moon?
What is a quasar?
What was Percival Lowell convinced he could see on Mars that might indicate the presence of intelligent life?
Which planet has no carbon dioxide?
Which American astronomer first described a subset of spiral galaxies characterized by one bright central region containing strong, broad emission lines in 1944?
What is the name of the cloud that marks the edge of the Solar System?
What is the pressure at the center of the Earth?
Mars has two moons-Phobos and Deimos. What do those names literally mean?
What is a galactic year?
How many times more luminous is the Milky Way compared to our Sun?
Astronomers are now working on a new complex theory to explain the whole universe. This incorporates the possibilities of 11 dimensions apart from parallel universes. In short, it is called The _ Theory.
How many planets have rings?
How long is a galactic year?
What were the names of the two dogs carried into space by Sputnik 5?
How many kilometers is one light year(approximately)?
What is Pluto's period of revolution around the sun?
What does the astronomical object called Charon orbit?
What is the only moon in the solar system that has an atmosphere?
What are the huge storms that the sun produces called?
What is the third brightest object in the Earth's sky?
Between which two planets does the asteroid belt lie?
The word "lunar" means something related to what?
Who is credited with creating the "Big Bang Theory"?
What agency maintains the U.S. space program?
What rocket launched the Apollo program?
What is seventh planet in order of distance from the sun?
How long does it take Mercury to rotate on its axis?
How long does it take Mars to rotate on its axis?
To any astronaut, what is an EVA?
The path traveled by a body in space is known as what?
"That's one small step for a man. One giant leap for mankind." - who told this?
Who was not an astronaut?
Where on the moon did people first land a spacecraft?
What is the sixth planet from the sun?
Who first proposed the heliocentric model of the solar system?
What was the first probe to land on Venus?
What is the fastest planet in the Solar System, with a speed of about 45 km/second around the Sun?
95% of all matter in the universe is invisible, and is called the
In 5 billion years which will be 250 times bigger and close enough to swallow up the Earth.
Which is the largest known star and is 2000 times bigger than the Sun?
There are three golf balls on
The entire surface area of which planet is smaller than Russia?
Which is the windiest planet in the Solar System?
What is the coldest known place in the universe?
What is the largest star discovered in Milky Way galaxy which is 17,000 times bigger & 100,000 more luminous than the Sun?
What is the nearest supermassive black hole which is 26,000 light years away, right in the middle of Milky Way Galaxy?
What is the largest galaxy extending 2 million light years from its core, with over 100 trillion stars?
Which of the Solar System moons that have water?
Jupiter and Saturn rains contain
After helium and hydrogen, the most common element on the Sun is
What is moving away from the Earth 3.8 cm every year?
If __________ size piece of the Sun were placed on Earth, one would have to stand as far as 145 kilometres (90 miles) away to be safe.
The star "Lucy" in constellation Centaurus is actually a huge cosmic ________ of 10 billion trillion trillion carats.
What atoms are there in the interstellar space?
Which is the only planet not named after a Roman or Greek god?
Which has hundreds of times more oil and natural gas than all the known reserves on Earth?
The largest of modern constellations is
What is the smallest of modern constellations, with only 4 bright stars?
Mars is red because its soil is very rusty made of
Which is the most luminous star known - 10 million times the power of the Sun and as big as the size of Earth's entire orbit around the Sun?
What is the largest known star VY Canis Majoris, so big that if our Sun were a ball 117 cm (46 in) wide, this star would be 2.25 kilometres (1.3 miles) wide?
The temperature on which planet varies so extremely that it will rise up to 430C during the day and drop as low as -140C at night?
Which planet is made up of just gas with no solid surface to land on?
All of which planet moons are named after William Shakespeare and Alexander Pope characters?
What are the only planets that rotate clockwise (retrograde rotation) ?
Interesting astronomy facts
The sun, as well as everything that circles it, such as the eight (originally nine) planets we all remember from primary school, make up our solar system. But the primary planets are only the beginning, as different and intriguing as they are. Comets, asteroids, dwarf planets, odd moons, and a slew of other weird phenomena that defy explanation are among Earth’s cosmic neighbors.
On Pluto, scientists uncovered ice-spewing volcanoes, while on Mars, a genuinely “grand” canyon the size of the United States has been discovered. Beyond Neptune, there might possibly be a massive, unknown planet waiting. Continue reading to learn about some of the most bizarre facts about the solar system.
1. Titan does have a liquid cycle, but it isn’t water
Titan’s lakes contain methane and ethane, as well as a layer of water. Titan, another strange moon in Saturn’s system, has a liquid “cycle” that transports stuff from the atmosphere to the surface. Titan’s huge lakes are filled with methane and ethane, presumably atop a layer of water, which sounds a lot like Earth’s water cycle.
Researchers seek to deduce some of Titan’s mysteries using data from the multinational Cassini mission before developing a submersible to explore the mystery moon’s depths.
2. The atmosphere of the sun is much hotter than the surface of the sun
The sun’s temperature fluctuates with each layer of the atmosphere. The photosphere of the sun is 10,000 degrees Fahrenheit (5,500 degrees Celsius), whereas the sun’s higher atmosphere reaches temperatures in the millions of degrees. It’s a significant temperature difference with no explanation.
NASA, on the other hand, has many sun-gazing spacecraft on the case and has some theories about how the heat is created. One is “heat bombs,” which occur when magnetic fields in the corona intersect and realign. When plasma waves go from the sun’s surface to the corona, this is another example.
We’re closer than ever to solving the mysteries at the center of our solar system, according to fresh data from the Parker Solar Probe (which recently became the first human-made object to contact the sun).
3. The yin-yang moon of Saturn
Iapetus, Saturn’s moon, has an extremely dark hemisphere that faces away from the planet and a very bright hemisphere that faces Saturn. Most asteroids, moons, and planets have fairly uniform surfaces, but Iapetus occasionally glows brightly enough to be seen by Giovanni Cassini’s telescope in the 1600s and then dims by several magnitudes when seen in the other direction.
According to current research, Iapetus, also known as Saturn VIII, is mostly made of water ice. Scientists believe that when the moon’s darker side confronts the light, water ice sublimated away from that location, leaving darker rock behind. As dark material warms up more than bright, reflecting ice, this might have formed a positive feedback loop: as the darker, warmer side of the moon shed ice, it became simpler to heat up each time it faced the sun, hastening the loss of additional ice.
4. Organic molecules may be found all over the place
Many additional bodies in the solar system, notably Comet 67P/Churyumov-Gerasimenk, have been discovered to contain organic compounds. A picture shot by the ESA’s Rosetta spacecraft shows the jagged topography of comet 67P/Churyumov-nucleus. Gerasimenk’s
Organics are complex carbon-based substances that may be made by non-biological processes as well as by biological activities. Organic molecules are abundant on Earth, but they may also be found in surprising places around the solar system. Organics, for example, have been discovered on the surface of Comet 67P. The result supported the theory that organic chemicals needed to kick-start life on Earth may have been delivered from space. Organics have also been discovered on Mercury’s surface, Saturn’s moon Titan (which gives Titan its orange hue), and Mars’ surface.
5. Miranda, what happened to her?
The moon of Uranus Miranda’s landscape is one of the most varied among alien bodies. Miranda, a dark moon of Uranus that was only seen briefly by Voyager 2 in 1986, is one of the most strange moons in the solar system. Sharp ridges, craters, and other large disturbances may be seen on Miranda’s surface, which is often the consequence of volcanic activity. That type of surface may be caused by tectonic action, but Miranda is far too tiny to create that much heat on its own.
Uranus’ gravitational pull is thought to have caused the push-pull motion that heated, churned, and contorted Miranda’s surface. However, we’ll need to send another spacecraft to the moon’s unexplored northern hemisphere to be sure.
6. Saturn’s storm is hexagonal in form
A weird hexagonal-shaped storm has been raging for decades in Saturn’s northern hemisphere. A roaring six-sided storm called “the hexagon” may be seen in Saturn’s northern hemisphere. This hexagon, a massive complex storm, has loomed for decades, if not centuries.
The odd storm was detected in the 1980s, but it was scarcely visible until the Cassini spacecraft sailed by in 2004 and 2017. The storm is 180 miles (300 kilometers) tall, 20,000 miles (32,000 kilometers) broad, and made of air flowing at around 200 mph (320 km/h), according to Cassini images and data.
7. Neptune is overheated
Neptune is around 30 times the distance between the sun and Earth. Because Neptune is nearly 30 times further away from the sun than Earth, it receives far less heat and light. However, when compared to Uranus, it emits significantly more heat than it absorbs and has far more activity in its atmosphere than planetary scientists would expect. Uranus is closer to the sun than Neptune, but it emits roughly the same amount of heat. Scientists aren’t sure why.
Winds on Neptune can reach speeds of up to 1,500 miles per hour (2,400 kilometers per hour). Is it the sun, the planet’s core, or gravitational contraction that’s supplying all that energy? Researchers are attempting to discover the answer.
8. The moon of Jupiter Io is home to massive volcanic outbursts
Hundreds of active volcanoes may be found on Io. During a visit, NASA’s Galileo probe caught an amazing eruption. Jupiter’s moon Io may come as a shock when compared to Earth’s calm moon. The Jovian moon includes hundreds of volcanoes and is the most active moon in the solar system, with sulfur plumes reaching 190 miles (300 kilometers) into its atmosphere. Io’s volcanoes, according to NASA, spew one ton (more than 900 kilograms) of gases and particles into space toward Jupiter every second.
The tremendous forces that Io is subjected to while nestled in Jupiter’s gravitational well and magnetic field generate its eruptive character. As the moon approaches and departs from the planet, its interiors tighten and relax, providing enough energy for volcanic activity.
Scientists are still attempting to figure out how heat travels through Io’s interior, making it impossible to anticipate where volcanoes will be found just based on scientific models.
9. There could be a massive planet at the solar system’s edge
Planet Nine is a hypothetical planet that might explain various Kuiper Belt object motions. Based on mathematical calculations and simulations, astronomers Konstantin Batygin and Mike Brown of the California Institute of Technology reported in January 2015 that there might be a huge planet lying far beyond Neptune. Several teams are now searching for this hypothetical “Planet Nine,” with research indicating that it might be discovered within the next decade.
If this huge object exists, it might provide insight into the motions of certain objects in the Kuiper Belt, an icy region beyond Neptune’s orbit. Brown has already detected numerous huge objects in that area, some of which are comparable to or larger than Pluto. (His discoveries were one of the driving forces behind Pluto’s reclassification as a minor planet in 2006.)
However, scientists are also investigating the possibility that “Planet Nine” is a grapefruit-sized black hole that warps space in the same manner that a massive planet would. Another team hypothesizes that the strange motions of the Kuiper Belt’s inhabitants are the result of the combined effect of multiple tiny objects, rather than an undiscovered planet or black hole.
10. The Van Allen belts around Earth are stranger than predicted
In 1958, the Van Allen belts were found. Large bands of radiation encircle Earth, expanding and contracting in response to solar activity. The Van Allen belts are a series of magnetically confined, very energetic charged particles that surround our planet (named after the discoverer of the phenomenon.) While we’ve known about the belts since the dawn of time, the Van Allen Probes (released in 2012) has given us the finest look we’ve ever had of them. Along the journey, they’ve discovered a few surprises.
The belts now extend and constrict in response to solar activity. The belts can be highly distinct from one another at times, while they might grow into one gigantic entity at other times. In 2013, an additional radiation belt (beyond the existing two) was discovered. Scientists can better forecast space weather and solar storms by understanding these bands.
11. The majority of comets are discovered with a sun-gazing telescope
ISON, the comet, appears in the image’s bottom right corner and sweetens up to the top right. The ESA/NASA Solar and Heliospheric Observatory took the spectacular image, which included a sun image from NASA’s Solar Dynamics Observatory in the middle.
Comets were formerly the domain of amateur astronomers who scoured the skies with telescopes night after night. While some professional observatories made comet discoveries as well, with the launch of the Solar and Heliospheric Observatory (SOHO) in 1995, things began to change.
Since then, the spacecraft has discovered almost 2,400 comets, which is an impressive side-mission for a telescope designed to study just the sun. “Sungrazers” is a nickname for these comets. Many amateurs continue to look for comets by identifying them from raw SOHO photos. In 2013, SOHO saw the disintegration of the brilliant Comet ISON, which became one of its most renowned sightings.
12. Uranus spins sideways
Uranus looks to be turning on its side as it orbits the sun like a ball. The north pole of Uranus is at 4 o’clock in this composite view of the two hemispheres taken using Keck Telescope adaptive optics.
Uranus is commonly shown in classroom solar system models as a featureless blue ball, but upon closer investigation, this gas giant of the outer solar system is very strange.
According to NASA’s Uranus guide, the planet turns on its side and seems to roll around the sun like a ball. The planet’s unique orientation (approximately 90 degrees sideways relative to the other planets) is most likely due to a cataclysmic collision in the distant past.
The tilt of Uranus creates the solar system’s most intense seasons, according to NASA. The sun shines directly over the planet’s north or south pole for nearly a quarter of each Uranus year (or 21 Earth years, as each Uranus year is 84 years long). On Earth, this implies that half of Uranus never sees the light for more than two decades.
Scientists keep an eye on Uranus’ harsh seasons and predicted that the planet’s equinox in 2007 would bring extraordinary weather. But it wasn’t until seven years later that the atmosphere exploded in violent, unpredictable storms, making Uranus even more perplexing.
13. Rings are far more prevalent than we previously believed
Saturn isn’t the only planet having rings in the solar system. Since the invention of telescopes in the 1600s, we’ve known about Saturn’s rings, but it required spacecraft and more powerful telescopes created in the last 50 years to disclose more. Every planet in the outer solar system, including Jupiter, Saturn, Uranus, and Neptune, has a ring system, as we now know.
However, the rings vary from planet to planet: Saturn’s beautiful halo, which is made up in part of glittering, reflecting water ice, is unique. The other giants’ rings are most likely comprised of stony particles and dust. Planets aren’t the only ones with rings. Astronomers detected rings around the asteroid Chariklo in 2014, for example.
14. Pluto’s atmosphere is strange
When NASA’s New Horizons spacecraft was 120,000 miles (200,000 kilometers) away from Pluto, it captured this image. The atmosphere of Pluto is seen as a blue haze.
The atmosphere seen on Pluto defied all expectations. The unexpected haze reached a height of 1,000 miles (1,600 kilometers), soaring higher above the surface than the Earth’s atmosphere. Scientists investigated the haze as data from NASA’s New Horizons spacecraft came in, and they detected some surprises there as well.
Pluto’s atmosphere has roughly 20 layers that are both colder and denser than predicted, according to scientists. This has an impact on how rapidly Pluto’s nitrogen-rich atmosphere escapes into space. The New Horizons mission discovered that tons of nitrogen gas depart the dwarf planet every hour, yet Pluto manages to replace that lost nitrogen on a regular basis. Geological activity on the dwarf planet is most likely producing more of it.
15. The Great Red Spot on Jupiter is dwindling
The Great Red Spot on Jupiter is the largest storm in the solar system, but the anticyclonic storm is shrinking, so it won’t be for long. During a flyby in 2019, NASA’s Juno spacecraft acquired this photograph of the famed storm.
Jupiter is the biggest planet in the solar system, and it also contains the solar system’s greatest storm. It’s been known as the Great Red Spot since the 1600s, and it’s been investigated by contemporary sensors like NASA’s Juno, which just revealed that the storm is hundreds of kilometers tall (and likely fed by winds from thousands of miles below, too). For millennia, the storm has been a blazing puzzle, but in recent decades, another mystery has emerged: the location is shrinking.
The storm was barely 10,250 miles (16,500 km) wide in 2014, less than half its historic extent. Professional and amateur telescopes are also monitoring the shrinking. Because viewing time on bigger, professional telescopes are restricted and often split between multiple objects, amateurs are typically able to produce more reliable observations of Jupiter.