Daisy Dobrijevic

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.

Reference Saturn is the sixth planet from the sun and the second-largest planet in the solar system. We explore this gas giant in more detail here.

The moon-landing hoax is still believed by some – over 50 years since Apollo 11. We look at why people still think the whole thing never happened.

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 Track the International Space Station (ISS) 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 Earth's atmosphere protects the planet and sustains life.

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.

Reference Learn how the moon formed, how its orbit affects Earth's tides, why solar and lunar eclipses happen and the history of lunar exploration.

Reference Delve into the life and theories of Stephen Hawking; one of the greatest theoretical physicists in history.

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.

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.

REFERENCE The space shuttle Columbia broke up on Feb. 1, 2003, killing its seven-member crew. An investigation led to changes in NASA procedures.