Astronomy & Space
What is the largest planet in our solar system?
Jupiter
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Which planet in our solar system has the hottest surface temperature?
Venus: Despite being further from the Sun than Mercury, its thick atmosphere traps heat via a runaway greenhouse effect, reaching temperatures of about 460*C
What is the name of the closest star to Earth, excluding the Sun?
Comets: Often called "dirty snowballs," they are composed of frozen gases, rocks, and dust.
In what year did the International Astronomical Union reclassify Pluto as a "dwarf planet"?
2006: The International Astronomical Union (IAU) established the "dwarf planet" category that year.
What is the name of the galaxy closest to our own Milky Way?
Andromeda Galaxy: It is a spiral galaxy approximately 2.5 million light-years from Earth.
What is the hottest planet in our solar system?
Venus
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What is the name of the supermassive black hole at the center of the Milky Way galaxy?
Sagittarius A*: This supermassive black hole is located at the galactic center of the Milky Way.
What is the name of the closest star to Earth, excluding the Sun?
Proxima Centauri: It is part of the Alpha Centauri star system and is about 4.24 light-years away.
Which planet has the strongest recorded winds in the solar system?
Neptune: Winds on Neptune can reach speeds of over 2,000 kilometers per hour.
What protects Earth from the Sun's harmful ultraviolet radiation?
The Ozone Layer: This region of Earth's stratosphere absorbs most of the Sun's ultraviolet radiation.
What star is closest to Earth?
The Sun
Approximately how old is the universe?
13.8 billion years: Scientists estimate the age of the universe based on cosmic microwave background radiation and the expansion of the universe.
Which planet is known for spinning "backwards" (retrograde rotation) compared to most others?
Venus: Venus rotates on its axis in the opposite direction to most planets, meaning the Sun would rise in the west.
What is the name of the first human to travel into space?
Yuri Gagarin: The Soviet cosmonaut became the first human in space on April 12, 1961.
What is the name of the first artificial satellite launched into space?
Sputnik 1: Launched by the Soviet Union on October 4, 1957.
Which planet is known as the "Red Planet"? Mars
Mars
Which two planets in our solar system do not have any natural satellites (moons)?
Mercury and Venus: These are the only two planets in our solar system without any moons.
How many Earths could approximately fit inside the Sun?
1.3 million: The Sun's volume is so vast that over a million Earths could fit inside it.
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What is a "light-year" a measurement of?
Distance: A light-year is the distance light travels in one vacuum year—roughly 9.46 trillion kilometers.
What is the term for a meteor that survives its passage through the atmosphere and strikes the ground?
Meteorite: A "meteor" is the streak of light in the sky, but if it hits the ground, it is a "meteorite".
Name all the Planets:______, _____, ____, _______, ______, ______, and _______. (THE SUN IS NOT A PLANET!)
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune
What is the largest volcano in the solar system, and which planet is it on?
Olympus Mons on Mars: This giant shield volcano is nearly three times the height of Mount Everest.
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What is the strongest known magnet in the universe?
Magnetar (a type of Neutron Star): These stars have magnetic fields trillions of times stronger than Earth's.
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Which planet is named after the Roman god of agriculture?
Saturn: Its name comes from the Roman god Saturnus.
What is the name of the mission that first landed humans on the Moon?
Apollo 11: Neil Armstrong and Buzz Aldrin became the first humans to land on the Moon during this mission in 1969.