References

REFERENCE Earth is the only planet known to support life. Learn about what Earth is made of and where it came from.

In another universe, Russian Doll never would have been made. Thankfully, we live in the universe where it did.

Star Wars: Visions is a unique entry into the franchise that combines an amazing collection of artists with timeless Star Wars stories.

Reach for the stars with the best space exploration games that let you discover alien worlds, dodge supermassive black holes, or become an interstellar trucker.

Reference Most stars in the universe will eventually burn off all of their hydrogen and become dead husks called white dwarfs.

Every astrophotographer should have one of the best tripods in their kit bag – here are our favorites.

Three stars in this system are the closest stars to Earth, other than the sun.

The best compact binoculars are great for their portability, but limited in astronomy performance.

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.

The new moon occurs Saturday (Dec. 4) at 2:43 a.m. EST (0743 GMT), along with a total solar eclipse.

We look at the best camera backpacks on the market right now and pick our favorites from brands like LowePro, Vanguard and Peak Design.

Reference There are a few good theories for a multiverse — an infinite number of parallel universes besides our own.

Climate change is already affecting Earth so seriously, its consequences can be seen from space.

The best lightsabers you can actually buy. Credits will do fine.

Halloween in space can be just as fun as the spooky holiday on Earth. Check out these amazing Halloween costumes by astronauts

REFERENCE Mercury is the smallest planet in our solar system and is known for its short years, long days, extreme temperatures and weird sunsets.

REFERENCE Elon Musk is an entrepreneur best known in space circles for launching SpaceX, the first private company to launch a mission to the International Space Station.

Reference The Apollo 13 mission was an example of NASA's ingenuity under pressure.

REFERENCE Read on for a brief history of UFO sightings, potential explanations for them, and cultural attitudes toward the phenomenon.