Great Red Spot winds accelerating on Jupiter

Data from the Hubble Space Telescope shows that the Great Red Spot winds have been increasing on Jupiter over the past decade.

23 species proposed for delisting, now extinct

On September 21, 2021, another 23 species proposed for delisting by U.S. Fish and Wildlife. One is the beloved Ivory-billed Woodpecker.

Fossil footprints are oldest found in Americas

Fossil footprints discovered in White Sands National Park, New Mexico, are the oldest known in the Americas. These footprints date back 23,000 years.

Solar superflares hit Earth multiple times

Scientists found evidence for solar superflares thousands of years ago from evidence in tree rings. Could a solar superflare happen again in the future?

Mushballs explain missing ammonia on ice giants

Giant slushy hailstones called mushballs explain missing ammonia in the atmospheres of Uranus and Neptune. They carry the gas down far too deep to be detected.

Satellites versus stars: Which will dominate the sky?

In the battle of satellites versus stars, the motion of constellations of satellites will draw the eye and drown out the quiet background stars.

Moon in Gemini before dawn September 29 and 30

On September 29 and 30, 2021, use the waning crescent moon in Gemini to find the stars Castor and Pollux in the predawn sky.

Mars’ small size limited its habitability

Mars was once a wet and habitable world, so what happened to change that? According to a new study from Washington University in St. Louis, Mars' small size is likely to blame for why it lost most of its water and atmosphere.

Einstein’s most famous equation: E=mc2

Einstein's most famous equation describing the relationship of energy and mass, E=mc2, first appeared in a scientific journal on September 27, 1905.

Sounds of space: Jingle, pluck and hum

Hear the sounds of space. The videos in this post are what happens when scientists turn astronomical data into sound, via a process called sonification.