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Astronomy Essentials
Visible planets and night sky February 2023
February 2023 visible planets including dazzling Jupiter and Venus in the west after sunset. Mars is high in the evening sky. Mercury is up before sunrise.
February 1, 2023
Space
Watch exoplanets orbit their star in new video
You can watch 4 exoplanets orbit their home star in this new video from Jason Wang of Northwestern University. See the video here.
February 1, 2023
Astronomy Essentials
Space
Exoplanets are worlds orbiting other stars
Exoplanets are worlds orbiting distant stars. Learn the history of our knowledge of exoplanets, the various types, how astronomers find them, and more.
February 1, 2023
Sun
Sun activity: Massive prominence eruption
Sun activity for February 1, 2023. Low with C and B flares. A massive prominence erupted off the northwest limb this morning.
February 1, 2023
Sun
Comet Machholz rounds the sun, drops fragments
Comet Machholz made its closest approach to the sun on January 31, 2023. It left behind tiny fragments. Read more about this unusual comet.
January 31, 2023
Spaceflight
SpaceX Starlink launches for January 2023
SpaceX’s next Starlink launch for the month is currently scheduled from California at 16:15 UTC on January 31, 2023. Watch the livestream here.
January 31, 2023
Astronomy Essentials
Comet 2022 E3 ZTF closest to Earth February 1 and 2
The green comet - Comet 2022 E3 (ZTF) - will be closest to Earth on February 1 and 2. It's prime time to view this comet, which might be the brightest of 2023.
January 31, 2023
Today's Image
Green comet photos and video: Editors’ picks
Enjoy these photos of Comet 2022 E3 (ZTF) as it approaches Earth, taken by members of the EarthSky community. The comet is closest to Earth on February 1 and 2.
January 31, 2023
Space
Lucy spacecraft to visit an asteroid this year
The Lucy spacecraft has a new target! It will visit a main-belt asteroid at the end of 2023, two years ahead of schedule. Read more about its new target.
January 31, 2023
Astronomy Essentials
Comets and asteroids: What’s the difference?
Comets and asteroids both orbit our sun, but usually reside in different parts of our solar system. And except for a few, they're different materials.
January 31, 2023
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