Space

Are We About to See the Rare Green Comet Nishimura Light Up the Sky?

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This is an image of the comet known as C/2023 P1 (Nishimura).

Comet Nishimura is swinging past Earth on its first visit in more than 400 years. (Image: SomeAstroStuff via Wikipedia)

Signs of Life? Why Astronomers Are Excited About Carbon Dioxide and Methane in the Atmosphere of an Alien World

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Exoplanet K2-18b.

Are we alone? This question is nearly as old as humanity itself. (Image: J. Olmsted (STScI) / Science: N. Madhusudhan (Cambridge University) via NASA / CSA / ESA)

Astronomers Have Discovered a Rare ‘Polar Ring Galaxy’ Wrapped in a Huge Ribbon of Hydrogen

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A polar ring galaxy.

Galaxies come in many shapes and sizes, from giant, slowly rotating ovals and fast-whirling spiral disks to faint ball-shaped blobs and dwarf irregulars. (Image: Jayanne English (U. Manitoba) / N. Deg (Queen’s U.) via The WALLABY team / CSIRO / ASKAP / NAOJ / Subaru Telescope)

4.5 Billion-Year-Old Sahara Space Rock Upends Assumptions About the Early Solar System

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The Erg Chech 002 space rock.

In May 2020, some unusual rocks containing distinctive greenish crystals were found in the Erg Chech sand sea, a dune-filled region of the Sahara Desert in southern Algeria. (Image: Steve Jurvetson via Wikimedia)

A New Theory Suggests the Universe Has Been Around Twice as Long as Believed

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Galaxy NGC 6822.

Galaxy NGC 6822, neighboring the Milky Way galaxy, being studied to learn more about stars and dust in the early universe. (Image: NASA / James Webb Space Telescope)

Russia Has Declared a New Space Race, Hoping to Join Forces With China

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Russian rocket blasting off with the Luna-25 lander.

Russian space agency Roscosmos had hoped to return to the Moon after an absence of nearly 50 years. Instead, on Saturday, it lost control of its Luna-25 lander. (Image: russianspaceweb)

Almost Half of Moon Missions Fail. Why Is Space Still So Hard?

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A Moon landing.

Space missions are a risky business. Just over 50% of lunar missions succeed. (Image: stux via Pixabay)

This Solar Cycle, the Sun’s Activity Is More Powerful and Surprising Than Predicted

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A coronal mass ejection on the solar surface.

A coronal mass ejection on the solar surface. (Image: via NASA / GSFC / SDO)

A Spectacular Fireball Just Streaked Across Melbourne, but Astronomers Didn’t See It Coming

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Space junk burning up in the atmosphere over Australia.

The first hours after a fireball sighting are like a detective mystery. (Image: Mark Davidson via Twitter)

Voyager 2 Has Lost Track of Earth. Only One Antenna in the World Can Help It ‘Phone Home’

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An artist concept depicting one of NASA's twin Voyager spacecraft.

In 1977, five years before ET asked to 'phone home,' two robotic spacecraft began their own journey into space space — Voyager 1 and Voyager 2. (Image: NASA via JPL-Caltech)
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