Carolyn Collins Petersen
Not Snowball Earth, More of a Slushball Earth
Our planet hasn't always been the warm, inviting place we know today. At least five times in its history, Earth…
It’s Time for Supernova Remnant Cassiopeia A to Get the JWST Treatment
Ready for another stunning image from JWST? How about a peek inside a supernova remnant? Not just any stellar debris,…
Do Repeating Radio Signals Indicate an Exoplanet with a Magnetosphere?
There's an interesting problem in exoplanet studies: how to tell if a planet has a magnetosphere. It's not like we…
Global Sea Levels Rose by 0.27 cm from 2021 to 2022
It probably comes as no surprise to people living in low-lying coastal regions, but sea waters are rising by large,…
Now We Know How a Solar Storm Took Out a Fleet of Starlinks
On March 23rd, sky observers marveled at a gorgeous display of northern and southern lights. It was reminder that when…
Plans are Underway to Build a 30 Cubic Kilometer Neutrino Telescope
How do astronomers look for neutrinos? These small, massless particles whiz through the universe at very close to the speed…
Are We Alone? The Answer Might Be in Space Dust That’s All Around Us
When it comes to looking for extraterrestrial life "out there" astronomers scan distant planets. They also look for technosignatures at…
Why Does ‘Oumuamua Follow Such a Bizarre Orbit? Hydrogen Outgassing
Nothing excites space enthusiasts like a good alien mystery. The interstellar visitor 'Oumuamua presented one as it moved through the…
Don’t Take Batteries to the Moon or Mars, 3D Print Them When you Get There
When the Artemis astronauts and future explorers go to the Moon and Mars, they'll need power. Lots of it. Of…
Did Supernovae Help Push Life to Become More Diverse?
Life on Earth has been around for a long time—at least 3.8 billion years. During that time, it evolved significantly.…