Stars
This is the closest star to Earth.
What is the Sun?
This planet is known as the "Red Planet."
What is Mars?
In 1961, this Soviet cosmonaut became the first human to travel into space.
Who is Yuri Gagarin?
This invisible form of matter doesn’t emit light, but scientists believe it makes up most of the universe’s mass.
What is dark matter?
NASA's upcoming mission to land astronauts on the Moon again is named this, after the twin sister of Apollo.
What is Artemis?
This bright star marks the "handle" of the Little Dipper and is famous for staying nearly fixed in the night sky
What is Polaris (the North Star)?
This is the largest planet in our solar system.
What is Jupiter?
This 1969 NASA mission successfully landed the first humans on the Moon.
What is Apollo 11?
These bursts of high-energy radiation last only milliseconds but come from billions of light-years away, and their origin is still debated.
What are fast radio bursts (FRBs)?
This private company aims to send humans to Mars, with plans for a spacecraft called Starship.
What is SpaceX?
After a massive star explodes in a supernova, it may collapse into this dense object, which not even light can escape.
What is a black hole?
This planet is famous for its prominent ring system.
What is Saturn?
Launched in 1977, this spacecraft has now entered interstellar space and carries a golden record.
What is Voyager 1?
Despite its name, this mysterious force is causing the expansion of the universe to accelerate.
What is dark energy?
NASA and its partners plan to build this small space station in lunar orbit to support future Moon missions.
What is Gateway?
This red supergiant in the Orion constellation is one of the largest stars visible to the naked eye.
What is Betelgeuse?
This planet rotates on its side and has a blue-green color due to methane in its atmosphere.
What is Uranus?
This private company became the first to send astronauts to the International Space Station aboard a commercially built spacecraft in 2020.
What is SpaceX?
This boundary, thought to surround black holes, marks the point beyond which nothing—not even light—can escape.
What is the event horizon?
The European Space Agency’s Rosalind Franklin rover is scheduled to explore this planet in a joint mission with Russia.
What is Mars?
Astronomers measure a star’s brightness as seen from Earth using this term, which also accounts for distance.
What is apparent magnitude?
Despite being closest to the Sun, this planet is not the hottest in the solar system.
What is Mercury?
This country’s Change program has landed robotic spacecraft on the Moon and returned lunar samples to Earth.
What is China?
This hypothetical tunnel through space-time could, in theory, connect distant parts of the universe, but no one knows if it truly exists.
What is a wormhole?
NASA’s Dragonfly mission, set to launch in the 2030s, will send a rotorcraft to explore this large moon of Saturn.
What is Titan?