CC0 Usage Conditions ApplyClick for more information. The Solar System is much more than a collection of planets, moons, comets, and asteroids. It is our home in the cosmos. The Solar System's only ...
When I was a kid, there were nine planets. Now we know of thousands! But that includes exoplanets, alien worlds that orbit alien suns. Only eight planets call our solar system home. Or there might ...
"These objects really could be anywhere in the solar system at any given time." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. One million alien ...
ALMA(ESO/NAOJ/NRAO)/M. McClure et al. Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Here’s what you’ll learn when you read this ...
Oh, we humans do love a cleanly defined boundary, don’t we? They make things easier, after all. If we’re trying to categorize something, knowing what labeled bin to put it in is handy. If we’re ...
On August 24, 2006, our solar system lost a planet. It wasn't by cataclysmic destruction, but rather by the vote of the International Astronomical Union, which declared that Pluto, considered the ...
Need a refresher about 3I/ATLAS? Here's everything to know about the interstellar object, including when the latest ...
If you are looking for your next reliable, high-quality telescope that offers excellent views of both solar system and deep-sky targets then look no further — the Sky-Watcher EvoStar 120 APO Doublet ...
A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...
Stations on planet Earth have sent and received messages beamed via laser from NASA’s Psyche spacecraft over 350 million kilometers (218 million miles) away. This breakthrough in optical communication ...
The Greeks built on Babylonian astronomy to make their observations of eclipses, and the word “ekleipsis” appears as early as the fifth century B.C. in Thucydides’s history of the Peloponnesian War, ...
The outer solar system is a vast and mysterious place that could be harboring hidden objects we know almost nothing about — from the elusive Planet Nine and baby black holes to interstellar visitors ...