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The Bridge: Discuss an Astronomy Picture of the Day • APOD: NGC 6164: A...
NGC 6164: A Dragon's Egg Explanation: Beautiful emission nebula NGC 6164 was created by a rare, hot, luminous O-type star, some 40 times as massive as the Sun. Seen at the center of the cosmic cloud,...
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The Bridge: Discuss an Astronomy Picture of the Day • APOD: Asteroid...
Asteroid Donaldjohanson Explanation: Main belt asteroid 52246 Donaldjohanson is about 8 kilometers long and 3.5 kilometers across. On April 20, this sharp close-up of the asteroid was captured at a...
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The Bridge: Discuss an Astronomy Picture of the Day • APOD: Barred Spiral...
Barred Spiral Galaxy NGC 5335 Explanation: This stunning portrait of NGC 5335 was captured by the Hubble Space Telescope. Some 170,000 light-years across and over 200 million light-years away toward...
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The Bridge: Discuss an Astronomy Picture of the Day • APOD: IC 418: The...
IC 418: The Spirograph Nebula Explanation: What is creating the strange texture of IC 418? Dubbed the Spirograph Nebula for its resemblance to drawings from a cyclical drawing tool, planetary nebula...
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The Communications Center: Breaking Science News • HST: Stellar sculptors in...
HST: Stellar sculptors in NGC 346 (in UV & Opt)NASA/ESA | | 2025 April 2 This new image showcases NGC 346, a dazzling young star cluster in the Small Magellanic Cloud. The Small Magellanic Cloud...
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The Bridge: Discuss an Astronomy Picture of the Day • APOD: Gum 37 and the...
Gum 37 and the Southern Tadpoles Explanation: This cosmic skyscape features glowing gas and dark dust clouds alongside the young stars of NGC 3572. A beautiful emission nebula and star cluster, it...
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The Bridge: Discuss an Astronomy Picture of the Day • APOD: Saturn's...
Saturn's Rings Appear to Disappear Explanation: Where are Saturn's ears? Galileo is credited, in 1610, as the first person to see Saturn's rings. Testing out Lipperhey's recently co-invented...
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The Bridge: Discuss an Astronomy Picture of the Day • APOD: A Happy Sky over...
A Happy Sky over Bufa Hill in Mexico Explanation: Sometimes, the sky itself seems to smile. A few days ago, visible over much of the world, an unusual superposition of our Moon with the planets Venus...
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The Bridge: Discuss an Astronomy Picture of the Day • APOD: MESSENGER's...
MESSENGER's Last Day on Mercury Explanation: The first to orbit inner planet Mercury, the MESSENGER spacecraft came to rest on this region of Mercury's surface on April 30, 2015. Constructed from...
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The Bridge: Discuss an Astronomy Picture of the Day • APOD: Young Star...
Young Star Cluster NGC 346 Explanation: The most massive young star cluster in the Small Magellanic Cloud is NGC 346, embedded in our small satellite galaxy's largest star forming region some 210,000...
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The Bridge: Discuss an Astronomy Picture of the Day • APOD: Titan: Moon over...
Titan: Moon over Saturn Explanation: Like Earth's moon, Saturn's largest moon Titan is locked in synchronous rotation with its planet. This mosaic of images recorded by the Cassini spacecraft in May...
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The Bridge: Discuss an Astronomy Picture of the Day • APOD: Spin up of a...
Spin up of a Supermassive Black Hole Explanation: How fast can a black hole spin? If any object made of regular matter spins too fast -- it breaks apart. But a black hole might not be able to break...
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The Bridge: Discuss an Astronomy Picture of the Day • APOD: Planet Lines...
Planet Lines Across Water Explanation: Whatâs causing those lines? Objects in the sky sometimes appear reflected as lines across water â but why? If the waterâs surface is smooth, then reflected...
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The Bridge: Discuss an Astronomy Picture of the Day • APOD: The Doubly Warped...
The Doubly Warped World of Binary Black Holes Explanation: If one black hole looks strange, what about two? Light rays from accretion disks around a pair of orbiting supermassive black holes make...
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The Bridge: Discuss an Astronomy Picture of the Day • APOD: Galaxy Wars: M81...
Galaxy Wars: M81 versus M82 Explanation: In the upper left corner, surrounded by blue arms and dotted with red nebulas, is spiral galaxy M81. In the lower right corner, marked by a light central line...
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