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Deep Dives
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Featured story · SkyNotes
Watch the August 12, 2026 total solar eclipse live. ESA's English broadcast begins around 1:30 p.m. Eastern and 10:30 a.m. Pacific, with coverage from Spain.
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Cosmic Bytes
They call Venus Earth's twin. Same size. Same mass. But Venus melts lead, rains sulfuric acid, and crushed every spacecraft we sent. Here's what went wrong.
Deep Dives
The universe has a hidden layer broadcasting in radio waves. Dead stars pulse like lighthouses, the Milky Way glows with synchrotron radiation, and the oldest signal in existence hums in every direction.
Cosmic Bytes
The night sky is a time machine you use by accident. Every photon you see is a piece of history — the Moon is 1.3 seconds old, the nearest star is 4 years old, and distant galaxies predate Earth.
Deep Dives
Webb found galaxies in the early universe that shouldn't exist yet. Here's what the 'too many too early' problem means for cosmology.
Cosmic Bytes
Telescope prices are climbing due to tariffs, supply chain shifts, and demand. Here's what's driving the increase and how to buy smart.
Observatory Watch
The Vera C. Rubin Observatory will transform amateur astronomy. Here's how citizen scientists can tap into the LSST alert stream.
Cosmic Bytes
Five Messier objects bright enough to spot from light-polluted suburban skies. Finder charts, gear tips, and what to expect at the eyepiece.
Observatory Watch
The Vera C. Rubin Observatory will generate 10 million alerts per night. Here's how the data pipeline works and why it matters for astronomy.
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