The European Space Agency’s X-ray space observatory XMM-Newton observed interstellar comet 3I/ATLAS on 3 December for around 20 hours. During that time, the comet was about 282–285 million km from the spacecraft.

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Omega Centauri dominates the southern sky as the Milky Way’s largest and brightest globular cluster, a dense sphere containing roughly 10 million stars. Earlier this year, astronomers found evidence that an intermediate mass black hole hides within the cluster’s core, revealed by seven stars moving far too quickly to remain bound unless something massive holds […]

On July 1st, 2025, the third interstellar object (ISO) ever detected was seen making its way through our solar system. Shortly after being alerted by automated detection systems, astronomers at the European Space Agency (ESA) began using observatories in Hawaii, Chile, and Australia to get a better look at the interstellar interloper. Since then, 3I/ATLAS […]

On 13 November, the Escape and Plasma Acceleration and Dynamic Explorers (EscaPADE) mission launched to space on the New Glenn rocket provided by Blue Origin.

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Radio astronomy has a pollution problem. Satellites thousands of kilometers overhead, designed to broadcast communications or relay data, are increasingly contaminating the frequencies astronomers use to study the universe. While much attention has focused on SpaceX’s Starlink and other low Earth orbit constellations, what about the satellites much farther away?

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Astronomers from the University of Hawai’i (UH) at Manoa and elsewhere have observed the Taurus star-forming region, which resulted in the discovery of planetary-mass and stellar companions of two ultracool dwarf stars. The new finding was presented in a paper published December 4 on the pre-print server arXiv.

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What could force a supermassive black hole (SMBH) out of its host galaxy? They can have hundreds of millions, even billions of solar masses. What’s powerful enough to dislodge one of these behemoths?

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SpaceX has authorized an insider share sale that values Elon Musk’s rocket and satellite maker at about $800 billion, according to a company message seen by Bloomberg on Dec. 12.

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