Reference Mars' atmosphere is over 100 times thinner than Earth's and is primarily composed of carbon dioxide, nitrogen and argon gases.
Reference The temperature of Uranus averages minus 320 degrees Fahrenheit. Uranus holds the record for the coldest temperature ever measured in the solar system.
Reference Hale-Bopp was an unusually bright comet that flew close to Earth in 1997. Tragically, Hale-Bopp also influenced the Heaven's Gate cult's mass suicide.
Reference The distance to Mars from Earth constantly changes as they orbit the sun. The average distance between Earth and Mars is 140 million miles (225 million km).
Reference How big is the moon? Our moon is the fifth largest moon in the solar system, with a radius of 1,079.6 miles (1,737.5 kilometers).
Reference The cosmic microwave background (CMB) is primeval radiation emitted shortly after the Big Bang. Regarded as an 'echo' of the Big Bang, CMB fills the universe.
Inside the latest issue of All About Space is our complete guide to exoplanets where we peer into the most extreme alien worlds and hunt for Earth 2.0.
Reference The sun's temperature varies from around 27 million degrees Fahrenheit (15 million degrees Celsius) in the core to about 10,000 degrees F (5,500 degrees C) at the surface.
Reference Neil Armstrong was a NASA astronaut, aeronautical engineer and the first person to walk on the moon, on July 20, 1969.
Reference How long it takes to get to Mars depends on several factors including planetary position and available technology.
Reference We explore some of the best Hubble Space Telescope images of all time including nebulas, galaxies, planets and more!
Reference Redshift and blueshift describe the change in the frequency of a light wave depending on whether an object is moving towards or away from us.
Reference Find out how track the International Space Station from Earth and see where it is right now.
REFERENCE If you could journey through the cosmos' most monstrous objects, what tales — if any — would you be able to tell?
Reference The geocentric model is a debunked theory that the Earth is the center of the universe, with the sun and planets revolving around it.
ESET Science Award celebrates remarkable Slovak scientists for the third year in a row. Laureates were chosen by a jury chaired by Professor Kip Thorne.
Reference Stephen Hawking was regarded as a brilliant theoretical physicist. His work on black holes and the big bang are topics of popular books.
Reference NASA’s Lucy mission is the first to visit the Trojan asteroids. Lucy will help answer questions about the formation of the solar system.
Reference The Orion Nebula (Messier 42) is the nearest star-forming region to Earth, about 1,350 light-years away. It is located in the Orion Constellation, just below Orion's Belt.
Reference The Orion Constellation — named after the hunter in Greek mythology — is found on the celestial equator and is a prominent constellation in the night sky.
Reference There are a few good theories for a multiverse — an infinite number of parallel universes besides our own.
Earth impact craters are unique tourist destinations. Here are some striking craters you can visit in person or from the comfort of your home with Google Earth.
Reference NASA's DART (Double Asteroid Redirection Test) mission is the first-ever space mission designed to test planetary defense technologies in asteroid deflection.
Reference Space shuttle Columbia was the first shuttle in space and performed 28 flights. Columbia's final flight ended in disaster as it broke apart during re-entry.