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Jeff Hecht posted the thread Sky & Scope Helium Rain Inside Saturn Might Shape Its Magnetic Field in RSS Feeds.

A thick inner layer of slowly falling helium blobs might help explain Saturn's almost perfectly aligned magnetic field. The post Helium...

23 minutes ago
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Alan MacRobert posted the thread Sky & Scope This Week's Sky at a Glance, May 14 – 22 in RSS Feeds.

The crescent Moon waxes across the evening sky, pairing with Mars in upright-standing Gemini and then, four days later, with Leo's...

Today at 6:44 AM
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Monica Young posted the thread Sky & Scope Sights and Sounds of the Solar System in RSS Feeds.

Spacecraft are returning sights and sounds from Venus, Jupiter, and beyond — here's a sampling. The post Sights and Sounds of the Solar...

Yesterday at 1:59 AM
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Mark Armstrong posted the thread Astronomy Now Catch Mercury after sunset at its best for the year in RSS Feeds.

Mercury is visible now in the early evening sky, offering sky-watchers in the UK and at other mid-northern latitudes their best chance...

Wednesday at 7:25 PM
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Astronomy Now posted the thread Astronomy Now A favourite of amateurs and professionals alike, M13 sits for Hubble portrait in RSS Feeds.

The globular cluster M13 in Hercules is a favorite target for amateur astronomers and professionals alike, a vast concentration of stars...

Tuesday at 12:54 PM
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Astronomy Now posted the thread Astronomy Now Voyager 1 sheds new light on interstellar medium in RSS Feeds.

An artist’s impression of the Voyager 1 spacecraft, now 43 years and more than 14 billion miles outbound from Earth. Image: NASA/JPL...

Tuesday at 12:54 PM
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David Dickinson posted the thread Sky & Scope NASA's OSIRIS-REX Leaves Asteroid Bennu, Heads for Home in RSS Feeds.

NASA’s asteroid explorer has begun its long journey home with precious cargo onbard: samples of the asteroid Bennu. The post NASA's...

Tuesday at 12:54 PM
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Mark Armstrong posted the thread Astronomy Now Nova Cassiopeia 2021 suddenly brightens into naked-eye visibility in RSS Feeds.

Nova Cas 2021, a ‘new star’ – a classical nova – discovered on 18 March 2021 in the northern constellation of Cassiopeia, has suddenly...

Monday at 1:58 PM
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Theo Nicitopoulos posted the thread Sky & Scope Water-Ice Clouds Could Have Warmed Early Mars in RSS Feeds.

New simulations show that the greenhouse effect of high water-ice clouds could have warmed early Mars, permitting the presence of...

Monday at 1:58 PM
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Roger W. Sinnott posted the thread Sky & Scope Useful Projects for a Lunar Eclipse in RSS Feeds.

Here's all you need to know to help us measure the size of Earth's shadow during the total lunar eclipse on Jan. 20–21, 2019. The post...

Monday at 1:58 PM
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Bob King posted the thread Sky & Scope Nova in Cassiopeia Brightens Suddenly in RSS Feeds.

A star in the constellation Cassiopeia that flared into view during mid-March has erupted to naked-eye visibility. Catch it while you...

Monday at 2:48 AM
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Astronomy Now posted the thread Astronomy Now Helium ‘rain’ in Saturn’s interior may influence magnetic field in RSS Feeds.

Data from the Cassini spacecraft’s final few orbits of Saturn, plugged into powerful computer models, indicate the presence of a layer...

May 7, 2021
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Astronomy Now posted the thread Astronomy Now A shining stellar nursery amid vast bubbles of heated hydrogen in RSS Feeds.

In the Perseus arm of the Milky Way, in the constellation of Puppis, a half dozen vast “bubbles” of hydrogen gas, heated by intense...

May 7, 2021
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Alan MacRobert posted the thread Sky & Scope This Week's Sky at a Glance, May 7 – 15 in RSS Feeds.

Mercury and low Venus adorn the west after sunset, with the crescent Moon soon to join them. Night brings the big Diamond of Virgo and...

May 7, 2021
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David Dickinson posted the thread Sky & Scope Tianhe Booster to Reenter This Weekend in RSS Feeds.

One of the largest spacecraft to plunge from orbit in recent decades is likely coming down on May 8th. The post Tianhe Booster to...

May 6, 2021

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