Planets & Moons
This rocky inner planet is closest to the Sun.
What is Mercury?
Known as the Red Planet, this world has the largest volcano in the solar system, Olympus Mons.
What is Mars?
Saturn's largest moon, it is the only moon in the solar system with a dense atmosphere and stable surface liquids.
What is Titan?
This ice giant rotates on its side, with its axis tilted about 98 degrees.
What is Uranus?
Reclassified as a dwarf planet in 2006, it was first visited by NASA's New Horizons in 2015.
What is Pluto?
This 1969 NASA mission first landed humans on the Moon.
What is Apollo 11?
Launched in 1990, this orbiting observatory has produced iconic deep-field images of the universe.
What is the Hubble Space Telescope?
These twin NASA spacecraft launched in 1977 are now in interstellar space.
What are the Voyager probes?
This rover, nicknamed 'Percy,' landed in Jezero Crater on Mars in 2021 to search for ancient life.
What is Perseverance?
Launched in December 2021, this infrared observatory sits at the L2 Lagrange point.
What is the James Webb Space Telescope?
On April 12, 1961, this Soviet cosmonaut became the first human in space.
Who is Yuri Gagarin?
He was the first person to walk on the Moon.
Who is Neil Armstrong?
In 1963, she became the first woman in space aboard Vostok 6.
Who is Valentina Tereshkova?
This astronaut commanded Apollo 13 and famously said, 'Houston, we have had a problem.'
Who is Jim Lovell?
This Canadian astronaut became famous for his social media posts and guitar performance aboard the ISS.
Who is Chris Hadfield?
Our solar system resides in this spiral galaxy.
What is the Milky Way?
This star, the closest to Earth, provides nearly all of our planet's energy.
What is the Sun?
The nearest major galaxy to ours, it is on a collision course with the Milky Way.
What is Andromeda?
These extremely dense remnants of massive stars have gravity so strong not even light can escape.
What are black holes?
Red giant in the constellation Orion, it is expected to go supernova in the (cosmically) near future.
What is Betelgeuse?
This international laboratory has been continuously inhabited since November 2000.
What is the International Space Station (ISS)?
SpaceX's reusable orbital-class rocket, it revolutionized space access starting in 2010.
What is the Falcon 9?
This propulsion concept uses electric fields to accelerate ions for highly efficient deep-space thrust.
What is an ion drive?
These wing-like panels convert sunlight into electricity for spacecraft.
What are solar panels?
NASA's massive new rocket designed to send astronauts back to the Moon under the Artemis program.
What is the SLS (Space Launch System)?