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Space
Rocky exoplanets can form in the most extreme environments
NASA's James Webb Space Telescope has found molecular building blocks of rocky exoplanets in a region previously thought to be too extreme and hostile.
December 7, 2023
Space
Could a giant void explain the universe’s expansion?
Scientists think we could live in a giant void, a less-dense bubble leftover from the Big Bang. If so, it could explain the expansion rate of the universe.
December 7, 2023
Astronomy Essentials
Visible planets and night sky for December
Visible planets: Venus dominates the morning sky. Bright Jupiter is visible in the night. Saturn shines after sunset. Mercury is low in the evening twilight.
December 7, 2023
Brightest Stars
Sun
Sun news: Prominent prominences and filaments
Sun news for December 7, 2023 is moderate. Several large prominences erupted from the east, north and west, producing quite a show.
December 7, 2023
Earth
What’s a green flash and how can I see one?
Have you ever seen the green flash from a setting sun? Learn how to see one here, plus how they appear, and enjoy some great photos and watch a video!
December 7, 2023
Spaceflight
List of SpaceX Starlink launches for December
Find a list of SpaceX's Starlink launches for December here. Learn more about Starlink satellites, and keep coming back for updates!
December 7, 2023
Earth
Human World
Space
Einstein’s gravity and quantum mechanics united at last?
Modern physics is founded on 2 pillars: Einstein's gravity and quantum mechanics. But these 2 theories contradict each other. Does this theory reconcile them?
December 6, 2023
Space
Astronomers spot 1st giant stream of stars between galaxies
Astronomers have found the 1st giant stream of stars outside a galaxy. It lies among the galaxies in the Coma cluster, and it may shed light on dark matter.
December 6, 2023
Today's Image
Exoplanet art lets you visualize alien worlds
Enjoy the exoplanet art of Martin Vargic. Martin illustrated more than 1,000 exoplanets based on astronomers' discoveries of alien worlds around other stars.
December 6, 2023
Space
1st planet-forming disk found in another galaxy
For the first time, astronomers have discovered a planet-forming disk around a young star in another galaxy outside our own Milky Way galaxy.
December 5, 2023
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