A rare interstellar comet has been caught in X-rays by two space telescopes, revealing how its gases interact with charged particles from the sun as it travels through the inner solar system.
NASA JPL pinpoints the moment the interstellar visitor passes closest to our planet.
"The forces that are needed to dislodge such a massive black hole from its home are enormous."
The HiRISE camera on NASA's Mars Reconnaissance Orbiter just notched a big milestone, snapping its 100,000th photo of the Red Planet.
The livestream will now begin Friday at 11 p.m. EST, Dec. 19 (0400 GMT on Dec. 20), weather permitting, after rain prevented a broadcast on Thursday night.
Friday, Dec. 19, 2025: Your daily feed for the holiday flyby of interstellar comet 3I/ATLAS by Earth.
Dr. Larry Denneau of the University of Hawaii is nothing like your typical astronomer.
New measurements demonstrate that smoke particles in the upper atmosphere are twice the size of lower-altitude ones.
NASA's Parker Solar Probe captured solar material looping back to the sun, revealing how it recycles magnetic energy and shapes future solar storms.
"This was an absolute surprise. It's extremely different from what we expected."
