Between midnight and dawn on Wednesday and Thursday (July 28 — 29), the Delta Aquariids meteor shower will light up the night sky. As Earth orbits the sun, it encounters the lopsided orbit of a comet, the icy surface of which leaves behind dust and rocks as they boil off from the sun’s heat. When…… MORE
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The Hubble Space Telescope has spied evidence of water vapor in the atmosphere around Jupiter’s moon Ganymede, the largest moon in our solar system. The water vapor forms as the icy surface of the moon turns from a solid to a gas, a process called sublimation. Astronomers uncovered this water vapor while using a combination…… MORE
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Astronomers have discovered the largest known comet, and it’s about a thousand times more massive than others. Comet Bernardinelli-Bernstein, so named because it was found by University of Pennsylvania department of physics and astronomy graduate student Pedro Bernardinelli and Professor Gary Bernstein, is between 62 to 124 miles (100 to 200 kilometers) across. The team…… MORE
As the Covid-19 pandemic swept the globe in early 2020, people around the world found themselves confined to their homes and limited to speaking to friends and loved ones via phone or video chat. But rather than helping alleviate isolation, this virtual contact was more likely to result in older people feeling lonely, according to…… MORE
An “unusually large” meteor illuminated the night sky over southern Scandinavia early Sunday morning before at least some of it came rumbling down near Oslo, the capital of Norway. The meteor “lit up the sky for a brief time as if broad daylight,” just after 1 a.m., Steinar Midtskogen, a spokesperson for the Norwegian Meteor…… MORE
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Have you ever spotted another planet in the sky? It’s a celestial thrill without compare. The first time I spied Mars, it appeared like a red star among a sea of glittering white ones. It was a mind-blowing moment, as I thought about the many spacecraft that humans have sent across millions of miles to…… MORE
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