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Clusters Nebulae Galaxies
Double Cluster in Perseus on October evenings
The Double Cluster in Perseus is a breathtaking pair of open star clusters, easy to see in October. Here's how to find it in your sky.
October 4, 2024
Sun
Sun news October 4: BAM, X9 flare! Largest of solar cycle
Sun news update for October 3, 2024. The sun just blasted its biggest flare of the solar cycle so far: an X9. Plus, auroras on the way tomorrow.
Space
Puffy exoplanet WASP-107 b has an asymmetric atmosphere
New observations by the Webb space telescope show that the giant exoplanet WASP-107 b has an asymmetric atmosphere between its western and eastern hemispheres.
October 3, 2024
Earth
Sea robins use their legs to taste the seafloor
Northern sea robins have 3 leg-like fin extensions, in front of each pectoral fin, with sensory organs that can taste the seafloor to detect buried prey.
October 3, 2024
Astronomy Essentials
Flashing star in autumn? Here are 3 candidates
Some October night, check out 3 of the flashiest stars in the night sky ... at least at this time of year. And here's why you see these as a flashing star.
October 3, 2024
Earth
GOES-19 first light images show stunning view of Earth
The GOES-19 satellite achieved 1st light and is now in beta mode. This Earth-observing satellite is already sending back stunning views of our home planet.
October 2, 2024
Astronomy Essentials
Annular solar eclipse today! See a ring of fire
Today, an annular solar eclipse will cross over parts of South America, the Pacific Ocean, the Atlantic Ocean, and Antarctica. Watch a livestream here.
October 2, 2024
Space
A striped ‘zebra rock’ on Mars and a new Mars face
NASA's Perseverance rover has found an unusual striped 'zebra rock' on Mars unlike any rocks seen before. How did it form and how did it get there?
October 2, 2024
Space
Barnard’s Star has 1 planet, maybe more, at last!
Astronomers have confirmed a small exoplanet orbiting Barnard's star, the closest single star to our sun. There are hints of at least 3 more planets as well.
October 1, 2024
Space
Remember when DART struck an asteroid? HERA is the follow-up
The Hera mission is scheduled to launch on October 7, 2024. Hera will explore Dimorphos, which the DART mission hit as a test of planetary defense in 2022.
October 1, 2024
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