Comets

Rosetta’s Philae Lander Was Alive on the Surface of 67P for 63 Hours, Trying to Communicate

In August 2014, the ESA's Rosetta spacecraft arrived at its destination, Comet 67P/Churyumov-Gerasimenko, after a 10 year journey. Rosetta carried…

2 weeks ago

Comet NEOWISE Was Spiraling and Spinning as it Passed by Earth

Earlier this week, we shared an image of Comet NEOWISE (C/2020 F3) taken by the Hubble Space Telescope. And now,…

4 weeks ago

Everyone Took Pictures of Comet NEOWISE, Including Hubble

This summer we were (finally) treated to a spectacular, naked-eye comet, C/2020 F3 NEOWISE. And while seeing it with our…

4 weeks ago

Organic Matter Could Have Delivered Earth’s Water

The origin of Earth's water is a big piece of the puzzle in Earth's history. Did it come from comets…

2 months ago

Parker Solar Probe Gives a Unique Perspective on Comet NEOWISE

Comet watchers have enjoying the newly-discovered NEOWISE comet since it was first spotted in March 2020. Now that it's visible…

2 months ago

Finally! We’ve got a comet that’s visible to the unaided eye. Comet C/2020 F3 NEOWISE

Look up! A rare naked-eye comet, C/2020 F3 (NEOWISE), is now visible to the unaided eye. But act fast -…

2 months ago

Interstellar Comet 2I/Borisov Formed in a Very Cold Environment

Using the ALMA array, astronomers were able to detect the chemical composition of an interstellar object as 2I/Borisov began releasing…

5 months ago

When Comets Break Up, the Fragments Can Be Devastating If They Hit the Earth

Comet breakups are a timely topic right now. The interstellar comet 2I/Borisov just broke into at least two pieces. And…

5 months ago

Interstellar Comet 2I/Borisov Appears to Have Broken in Half

In 2019, amateur astronomer Gennadiy Borisov discovered a comet, which now bears his name. There's a long history of amateur…

6 months ago

Rosetta Saw the Building Blocks of Life on Comet 67P

Why is there so little nitrogen in Comet 67P/Churyumov-Gerasimenko (67P)? That's a question scientists asked themselves when they looked at…

8 months ago