Posts by 

Kelly Kizer Whitt

Kessler syndrome of colliding satellites could make low-Earth orbit unusable

Space debris threatens ISS: the Kessler syndrome, a theory developed by NASA scientist Donald Kessler, predicts cascading collisions in orbit.

Landsat 9 returns its 1st Earth images

Landsat 9 took its first images of Earth on October 31, 2021. Enjoy these views of Earth from space, as Landsat 9 begins its monitoring of the land below.

Ceres and Aldebaran meet in early November 2021

Ceres and Aldebaran came close together as seen from Earth in early November, and EarthSky community members were ready to capture the moment.

Probing the depths of Jupiter’s storms

Juno provided data that has let scientists probe the depths of Jupiter's storms. We now know the Great Red Spot extends some 200 miles (300 km) down.

100-million-year-old crab preserved in amber

A 100-million-year-old crab is the first crab ever found in amber from the dinosaur era. The fossil bridges a gap between marine and nonmarine crabs.

The 1st extragalactic planet?

Scientists believe they might have detected the 1st extragalactic planet by examining x-rays from M51, the famous Whirlpool Galaxy.

Andromeda galaxy photos, 2021

Enjoy a photo gallery of the best Andromeda Galaxy images from EarthSky readers! The Andromeda Galaxy is a great observing target on fall evenings.

The fate of Arctic sea ice

Our warming world means the fate of Arctic sea ice could be in peril, along with the plants, animals and rich ecosystem that call it home.

Grus the Crane, home to ‘the bright one’

Grus the Crane is a constellation best seen from the Southern Hemisphere that has one notably bright star whose name actually means, "the bright one."

Small galaxy consumes an even smaller galaxy

Scientists found evidence that a small galaxy - the Large Magellanic Cloud, a satellite of the Milky Way - has eaten an even smaller galaxy.

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