Science·hard
In the life cycle of a star, what does a star eventually become after exhausting its hydrogen fuel and leaving the main sequence?Red giant (or white dwarf depending on mass)✓ correct
Blue dwarf
Neutron star immediately
It remains stable indefinitely
life cyclesastronomystarscosmology
Science·hard
Which of the following is NOT a type of black hole classified by astronomers?Quantum black hole✓ correct
Stellar black hole
Supermassive black hole
Intermediate black hole
black holesclassificationastronomy
Science·medium
In what year was the first image of a black hole's shadow captured by the Event Horizon Telescope?2019✓ correct
2015
2021
2017
black holesastronomyobservation
Science·easy
All black holes have the same mass.black holesmassastronomy
Science·medium
The supermassive black hole at the center of our Milky Way is called Sagittarius A*.black holesmilky wayastronomy
Science·medium
What is the boundary around a black hole called, beyond which nothing can escape?Event horizon✓ correct
Photon sphere
Schwarzschild radius
Ergosphere
black holesphysicsastronomy
Science·hard
What is the only planet in our solar system where it rains diamonds?Jupiter✓ correct
Saturn
Neptune
Uranus
fun factsplanetsspaceastronomy
Science·medium
Which planet in our solar system has the most extreme temperature variations between day and night?Mercury✓ correct
Venus
Earth
Mars
fun factsastronomyplanetsspace
Science·hard
What is the only planet in our solar system that rotates clockwise when viewed from above the North Pole?Venus✓ correct
Mercury
Uranus
Neptune
fun factsplanetssolar systemastronomy
Science·medium
Which planet has the most moons in our solar system?Jupiter✓ correct
Saturn
Uranus
Neptune
fun factsastronomyplanetsspace
Science·easy
Venus is the hottest planet in our solar system.fun factsplanetsastronomy
Science·medium
Which planet in our solar system rotates backward compared to most other planets?Venus✓ correct
Mercury
Mars
Neptune
fun factsplanetsastronomy
Science·medium
Which planet has the strongest magnetic field in our solar system?Jupiter✓ correct
Saturn
Neptune
Earth
fun factsspaceplanetsastronomy
Science·medium
Pluto is still classified as a planet by modern astronomical standards.fun factsplutoastronomyplanets
Science·hard
A day on Venus is longer than a year on Venus.fun factsvenusastronomyplanets
Science·medium
Which planet in our solar system spins backwards compared to most others?Venus✓ correct
Mercury
Mars
Saturn
fun factsastronomyplanets
Science·easy
What is the only planet in our solar system with life?Earth✓ correct
Mars
Venus
Jupiter
fun factsastronomyplanets
Science·medium
What is the only planet in our solar system that spins on its side?Uranus✓ correct
Saturn
Neptune
Mercury
fun factsplanetsastronomysolar system
Science·hard
How many minutes of daylight does Earth gain each day after the winter solstice?2-3 minutes✓ correct
30 seconds
5-10 minutes
15-20 minutes
fun factsastronomyearthseasons
Science·hard
What is the only planet that rotates clockwise?Venus✓ correct
Mercury
Mars
Jupiter
fun factsastronomyplanets
Science·easy
How long does it take light from the sun to reach Earth?About 8 minutes✓ correct
About 1 minute
About 30 minutes
About 2 hours
fun factsastronomylight
Science·medium
Which planet in our solar system is known to rotate backwards?Venus✓ correct
Mercury
Mars
Uranus
fun factsastronomyplanets
Science·hard
Which constellation contains the brightest star visible from Earth?Canis Major✓ correct
Orion
Ursa Major
Andromeda
general knowledgescienceastronomystars
Science·medium
Which planet has the most moons?Jupiter✓ correct
Saturn
Uranus
Neptune
general knowledgeastronomyplanetsspace
Science·easy
Which planet is known as the Red Planet?Mars✓ correct
Venus
Jupiter
Saturn
general knowledgeastronomyplanetssolar system
Science·medium
What is the date of the winter solstice, which some cultures celebrate around Christmas time?December 21 or 22✓ correct
December 25
December 31
January 1
christmasastronomysolstice
Science·medium
Which planet is third in mass and eighth from the sun?Neptune✓ correct
Uranus
Venus
Saturn
astronomyplanetsthe solar systemsciencespace
Science·medium
Which space shuttle, commanded by John Young, was the first manned U.S. spacecraft to land on land on April 14, 1981?Columbia✓ correct
Challenger
Discovery
Endeavour
spaceastronomyspace explorationscienceexplorationhistory
Science·medium
What is the approximate temperature of an interstellar gas cloud?10 K✓ correct
100 K
1,000 K
10,000 K
astrophysicssciencespaceastronomyphysics
Science·medium
Which planet is known for having the Great Red Spot?Jupiter✓ correct
Saturn
Mars
Neptune
sciencespacethe solar systemastrophysicsastronomyphysics
Science·medium
The tides on the earth's oceans are actually created by gravitational pull from the ____.Moon✓ correct
Sun
Milky Way
International Space Station
astronomysciencespace
Science·medium
Nicolaus Copernicus, famous for his theory that the sun was at the center of the solar system, was born in which country in 1473?Poland✓ correct
Italy
Germany
France
scienceastronomypeoplehistoryspace
History·hard
In which year were the first photographs sent from Mars?1976✓ correct
1964
1990
2009
eventsfirstsastronomyspace explorationhistoryrecords
Science·medium
Which is the densest planet in the Solar System?Earth✓ correct
Jupiter
Saturn
Neptune
sciencespacethe solar systemastrophysicsastronomyphysics
Science·medium
Which star is nearest the Earth?Sol✓ correct
Ursa Minor
Proxima Centauri
Epsilon Eridani
astronomythe solar systemgeneral knowledgesciencespace
Science·medium
What is the natural light display in Earth's polar regions caused by charged particles from the Sun called?Aurora✓ correct
Light pillar
Solar eclipse
Maelstrom
scienceastronomyspace
Science·medium
What term refers to a condition of very small gravitational forces?Microgravity✓ correct
Zero gravity
Minigravity
Hypergravity
spacephysicsscienceastrophysicsastronomy
Science·medium
What is the name of the second-largest planet in our solar system?Saturn✓ correct
Jupiter
Mars
Uranus
astronomyspaceplanetsthe solar systemscience
Science·medium
Which planet has the most extreme temperature variations?Mercury✓ correct
Venus
Earth
Mars
sciencespacethe solar systemastrophysicsastronomyphysics
General Knowledge·hard
What is the meaning of the name of the constellation Cygnus?Swan✓ correct
Ring
River
Mountain
namesastronomywordsgeneral knowledgelanguageculture