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Space & Astronomy
Missions, telescopes, astrophysics, exoplanets, and the future of exploration.
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Latest in Space & Astronomy
Moon phase today explained: What the Moon will look like on September 13, 2026
53+ min ago (320+ words) Mashable is a global, multi-platform media and entertainment company. Powered by its own proprietary technology, Mashable is the go-to source for tech, digital culture and entertainment content for its dedicated and influential audience around the globe. The Moon may be…...
Venus’s pale yellow clouds may hide something surprisingly dark
1+ hour, 9+ min ago (953+ words) Venus looks pale yellow in ordinary visible light, but the view changes dramatically in ultraviolet wavelengths. There, dark and bright features sweep across the planet's upper sulfuric acid clouds. Scientists have observed these patterns for about a century, yet the…...
Known physics suggests the early universe should have produced matter and antimatter in equal amounts. Nearly all of it annihilated into radiation, but roughly one extra matter particle survived for every billion pairs—and why that tiny imbalance existed remains one of physics’ deepest unsolved problems.
2+ hour, 23+ min ago (906+ words) The measured net baryon-to-photon ratio is about 6.1 parts in ten billion. Physics can describe the required ingredients for that excess, but no confirmed mechanism made it....
A New Catalog of Close to 3,000 Supernova Challenges Theories on Dark Energy
3+ hour ago (88+ words) The most comprehensive catalogue of exploding white dwarf stars ever assembled has revealed new clues about dark energy, the mysterious force driving the universe’s accelerating expansion....
Space News: NASA rocket takes first multi-point look inside radio-disrupting clouds
1+ week, 1+ day ago (474+ words) High above Earth, thin veils of metallic haze drift through the edge of space. Known as sporadic E layers, these high-altitude “clouds” form from the vaporized dust of burnt-up meteors, earning their name from the unpredictable way they emerge and…...
The Universe Changed Its Mind About Expansion
14+ min ago (29+ words) For billions of years, expansion slowed. Then something changed. About six billion years ago, the Universe crossed a strange cosmic threshold. Nothing …...
Amodei, Altman and Musk agree on one thing: slow the frontier down
4+ hour, 33+ min ago (384+ words) A thread went up on r/ArtificialInteligence tonight with a title that would have been a joke a year ago: three of AI's biggest rivals agree on something. The something is that the technology is moving too fast. The thread…...
Five night sky events to look forward to this autumn
48+ min ago (626+ words) Autumn brings longer nights to the northern hemisphere, offering more opportunities to get outside and look up at the night sky. There is plenty to look out for over the coming months, from impressive meteor showers to dazzling star clusters....
Astronomers Spotted a 'Bear' on Mars
4+ hour, 53+ min ago (186+ words) On 12 December 2022, an orbiter traveling 251 kilometers (156 miles) above the southern highlands of Mars photographed a hill....