Comet Lemmon Puts on Spectacular Show for Astrophotographers
Left to right: Andrew McCarthy, Mike Carroll, and AJ Smadi. Comet C/2025 A6 (Lemmon) made its closest pass…
The glaring security risks with AI browser agents
New AI-powered web browsers such as OpenAI’s ChatGPT Atlas and Perplexity’s Comet are trying to unseat Google Chrome…
Comet Lemmon (C/2025 A6) makes closest approach to Earth on October 21
Comet C/2025 A6 (Lemmon), a long-period object discovered on January 3, 2025, by the Mount Lemmon Survey in…
ALMA Detects Heavy Water in Planet-Forming Disk around Distant Protostar
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have detected doubly deuterated water (D2O), or ‘heavy water,’ in…
How to See Comet Lemmon This October
It was early January 2025 when a faint light spot was observed at the Mt. Lemmon Observatory in…
Interstellar Comet 3I/ATLAS Is Spewing Water Like a Cosmic Fire Hydrant
Comet 3I/Atlas continues to be full of surprises. As well as being only the third interstellar object ever…
Mysterious Comet Might Explain a Signal Beamed at Earth 48 Years Ago
You may be familiar with the famous “Wow!” signal. If you’re not familiar with the story, back in…
Perplexity’s Comet AI browser is now free for everyone
Perplexity’s Comet AI browser is now free for everyone worldwide. The browser had previously only been available to…
Perplexity’s Comet AI browser now free; Max users get new ‘background assistant’
AI search startup Perplexity is making its new Comet browser available to everyone in the world for free as…
Turns Out Cosmic Dust Isn’t Actually Miniature Rocks After All
Featured in this image from the NASA/ESA Hubble Space Telescope is a lenticular galaxy called NGC 4753 with…
Unusual New 3I/ATLAS Discovery Suggests the Interstellar Comet is “Anomalously Massive”
The mysterious comet 3I/ATLAS appears to be extremely large, making it orders of magnitude more massive than two…
New Type of Tektite Reveals 11-Million-Year-Old Asteroid Impact in Australia
Tektites are nearly pure glasses (practically no crystalline inclusions) created when a space rock slams into Earth, melting…