Space Shuttle Endeavour displayed vertically in new exhibit at California Science Center
Space Shuttle Endeavour displayed vertically in new exhibit at California Science Center – NASASpaceFlight.com We use cookies to ensure that we give you…
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A rare interstellar visitor triggered a SETI search for alien technology
Scientists with the SETI Institute have completed a search for possible technological signals coming from 3I/ATLAS, the third known interstellar object to pass through our Solar System. Using the Allen Telescope Array (ATA) at Northern California’s Hat Creek Radio Observatory, researchers examined a broad range of radio frequencies for evidence of extraterrestrial technology. As expected…
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Webb finds clues to ancient origin of Comet 3I/ATLAS
Science & Exploration 22/06/2026 4016 views 50 likes The third identified interstellar comet in human history has a surprising chemical makeup, raising questions as to how common, or unusual, conditions in our own Solar System may be. Interstellar Comet 3I/ATLAS (NIRSpec IFU) As interstellar Comet 3I/ATLAS began moving away from the Sun in December 2025,…
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This Week’s Sky at a Glance, June 19 – 28
FRIDAY, JUNE 19 The Moon is a thick crescent in the west, left of Regulus. A telescope this evening shows the Moon’s terminator crossing, from north to south, Mare Frigoris, Lacus Somniorum, Mare Tranquillitatis, and Mare Nectaris, as shown below. On the south edge of Nectaris is the standout flooded crater Fracastorius, always a landmark…
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The Quiet Conversation Between Muscle and Gravity, and What Happens When It Stops
Imagine a muscle as something that has spent your entire life in conversation with gravity, constantly sensing your body’s weight, constantly adjusting, constantly being told it is needed. Now imagine cutting that conversation off entirely. That is in some ways what happens to an astronaut’s body in orbit, and it is the problem at the…
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Scientists Map Europa’s Ice Using 13 Years of Radar Observations
Europa, one of Jupiter’s icy moons, has just given scientists a clearer picture of what lies above its hidden ocean. A long‑running radar study from Earth shows that Europa’s ice shell reflects radio waves in a very unusual way, strengthening the case that a deep layer of water sits beneath the surface and offering useful…
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Boeing’s MQ-28 Ghost Bat To Fly Alongside U.S. Fighters In Valiant Shield Exercise
Boeing’s MQ-28 Ghost Bat, a Collaborative Combat Aircraft (CCA) developed for Australia, is flying alongside US manned aircraft during Exercise Valiant Shield 2026 in the Pacific, the US Air Force has confirmed, marking a notable test of a platform it has not committed to buying. The exercise, which is taking place this week, involves the…
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Europe’s deadly heat wave seen from space photo of the day for June 30, 2026
Land surface temperature data captured by Europe’s Copernicus Sentinel-3 mission on Wednesday, June 23, 2026. The data were captured in the late morning, local time. (Image credit: contains modified Copernicus Sentinel data (2026), processed by ESA) Over 1,300 deaths have been attributed to a heat wave that swept across Europe and broke temperature records earlier…
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As the Ocean Warms, a ‘Cold Blob’ in the Atlantic Has Puzzled Scientists. It Might Be a Warning Sign About a Key Current System
A patch of water south of Greenland and Iceland has cooled by nearly 1.8 degrees Fahrenheit since 1900. A new study suggests that it shows a crucial system of ocean currents is weakening, which could alter Earth’s climate Michele Debczak | Correspondent June 30, 2026 12:17 p.m. The “cold blob,” shown in blue near the…
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July Podcast: Spotlight on Spica
Check out the illustrated version of this podcast on Sky & Telescope’s YouTube channel! If you checked in for last month’s Sky Tour, you’ll recall that Venus and Jupiter were really putting on a show in the west after sunset. That’s all changed now. Jupiter drops hopelessly out of sight in the early days of…
