References
Latest References
'Stargate' 30 years later: Roland Emmerich's flawed sci-fi classic remains a refreshing watch
By Fran Ruiz published
Three decades later, Stargate's legacy has endured. We look back at how it all started, what came after, and the franchise's possible future.
Night sky, November 2024: What you can see tonight [maps]
By Chris Vaughan last updated
Reference Find out what's up in your night sky during November 2024 and how to see it in this Space.com stargazing guide.
The brightest planets in November's night sky: How to see them (and when)
By Joe Rao last updated
Reference Our guide for viewing the planets tells you when is the best time to see them during the month ahead as well as other skywatching sights to look out for.
How to debate a flat-Earther
By Paul Sutter last updated
Some people around the world believe our planet is flat. Here's the (surprising) truth about debating them.
What is the speed of light?
By Vicky Stein last updated
Reference The speed of light puts a speed limit on matter, lets us peer back into the history of our universe, and has deep implications for physics and space travel.
What is the theory of general relativity? Understanding Einstein's space-time revolution
By Nola Taylor Tillman, Meghan Bartels, Scott Dutfield last updated
Reference Albert Einstein's theory of general relativity is based on the idea that massive objects cause a distortion in space-time, which is felt as gravity.
Quantum Entanglement: Unlocking the mysteries of particle connections
By Jesse Emspak last updated
Reference Quantum entanglement states that two particles are connected and affect one another even if those particles are light-years apart.
The 'Black Knight' satellite conspiracy: Uncovering the 120-year-old alien mystery
By David Crookes last updated
According to conspiracy theorists, the Black Knight satellite is an alien spacecraft orbiting Earth. Here's what's really going on.
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