Comets
Why don’t Green Comets Have Green Tails?
Comets with a green glow don't have green tails, and a new set of lab experiments tells us why.
The Real Science Behind the Movie “Don’t Look Up”
The new movie “Don’t Look Up” -- now available on Netflix -- is not your usual sci-fi disaster film. Instead,…
This Video of Comet Leonard (with Venus and Mercury) will Blow Your Mind
Since early this year, skywatchers on Earth have been tracking Comet Leonard, a kilometer-wide dirty snowball made of ice, rock…
The Biggest Comet Ever Seen Will get as Close as Saturn in 2031
A mega-comet – potentially the largest ever discovered – is heading from the Oort Cloud towards our direction. Estimated to…
A Newly-Discovered (Almost) Dwarf Planet Will Come Surprisingly Close in 2031
It’s good to remember how little we know about the outer solar system. Humans only really began observing it within…
Comets Have Tails of gas, Dust… and Metal?
In outer space, an object’s location has a huge impact on its temperature. The closer the object is to its…
Extrasolar Object Interceptor Would be Able to Chase Down the Next Oumuamua or Borisov and Actually Return a Sample
What if we had the ability to chase down interstellar objects passing through our Solar System, like Oumuamua or Comet…
A Comet Seen at the end of its Life. It’s covered in talcum powder
Astronomers finally managed to observe a comet nearing the end of its life. And they found that it's covered in…
Earth Gains 5,200 Tons of Dust From Space Every Year
Whenever I wipe the dust off my coffee table or catch a glimpse of dust motes floating in sunlight, my…
Comets Already Grow a Coma out in the Kuiper Belt
Just when do comets get their signature coma? Conventional wisdom says it only happens when they get close enough to…