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A storm on the sun, and a great week for auroras
Aurora alert in effect for the next few days: the sun sent out a halo coronal mass ejection on November 2, 2021, due to arrive at Earth on November 4.
November 4, 2021
Photos of November 3-4 auroras. Wow!
Aurora tour guide Markus Varik in Tromso, Norway, shares a collection of aurora photos from the CME impact, along with other photographers around the world.
November 4, 2021
Exoplanet lost its atmosphere in ancient impact
A young Earth-sized exoplanet lost its atmosphere in a giant impact about 200,000 years ago, leaving behind clues in leftover dust and carbon monoxide gas.
November 4, 2021
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.
November 2, 2021
Solar storm and aurora starting October 30
A solar storm after an eruption on the sun is carrying plasma toward Earth, which should produce northern and southern lights this weekend.
October 30, 2021
Moon and Mercury November 1, 2 and 3 before sunup
The moon and Mercury will appear near one another on the mornings of November 1, 2 and 3, 2021. Look in the sunrise direction, as dawn is breaking.
October 30, 2021
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.
October 29, 2021
X-flare yesterday, aurora alert this weekend
The biggest solar flares are known as X-flares. Check out this image of an X-flare on the sun on October 28, 2021. It prompted an aurora alert.
October 29, 2021
Another Astra launch attempt is imminent
A test payload for the U.S. Space Force to launch from the Astra spaceport in Alaska in early November 2021 will be Astra's 4th attempt at reaching orbit.
October 28, 2021
A new field guide for hot Jupiters
A new field guide for hot Jupiters combines Hubble Space Telescope observations with theoretical models. It should inform ideas about planet formation.
October 28, 2021
