In 1964, astronomers discovered the first black hole. It's called Cygnus X-1 and the evidence for its existence was discovered by x-ray detectors on a sub-orbital sounding rocket. Cygnus X-1 is about 7,300 light-years away and has about 21 solar masses. Since then, astronomers have discovered increasingly more massive black holes, including supermassive black holes (SMBH) at the heart of large galaxies like ours.
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Hubble Captures Stunning View of Third Interstellar Visitor
Astronomers using the Hubble Space Telescope have observed 3I/ATLAS, only the third known object from outside our Solar System to visit our neighbourhood. This interstellar interloper is putting on quite a show as it approaches the Sun, revealing secrets about visitors from the depths of space.
Watch SpaceX's Crew-10 astronauts return to Earth today after nearly 5 months in space
SpaceX's Crew-10 astronauts will return to Earth today (Aug. 9) after living on the International Space Station for nearly five months, and you can watch the action live.
Astronaut arrives at ISS, longs to be on the moon or Mars | On the International Space Station Aug. 4-8, 2025
The four members on SpaceX's Crew-10 mission are Earth-bound after bidding farewell to their Expedition 73 crewmates and departing the International Space Station.
Is that wildfire smoke plume hazardous? New satellite tech can map smoke plumes in 3D for better air quality alerts at neighborhood scale
For most of the past decade, forecasters have been able to use satellites to track these smoke plumes, but the view was only two-dimensional
Scientists capture bridge of stray stars being sucked from one galaxy to another
Astronomers spot a rare stellar bridge in Abell 3667, revealing an aggressive galaxy merger and new clues about dark matter.
Jim Lovell, Apollo 8 & 13 astronaut, dies at 97
Astronaut James A. Lovell Jr., Apollo 13 mission commander, reads a newspaper account of the safe recovery of the problem plagued mission. Lovell is on board the USS Iwo Jima, prime recovery ship for Apollo 13, which was on a course headed for Pago Pago. From Pago Pago the astronauts flew to Hickam Air Force Base, Hawaii, where they were presented the Presidential Medal of Freedom by President Richard M. Nixon. Other Apollo 13 crew members were astronauts John L. Swigert Jr., command module pilot, and Fred W. Haise Jr., lunar module pilot. Image: NASA
James ‘Jim’ Lovell, one of the last seven surviving Apollo astronauts died on Thursday, Aug. 7, at the age of 97. A veteran of four spaceflights at the dawn of America’s human spaceflight program, he flew two missions in the Gemini program and then served on the crews of Apollo 8 and the ill-fated Apollo 13.
Can you name the 12 Apollo astronauts who walked on the moon?
This quiz tests your knowledge of the astronauts who have stepped foot on the moon.
Jim Lovell, commander of NASA's Apollo 13 moon mission, dies at 97
NASA astronaut Jim Lovell — a veteran of four spaceflights, including Apollo 8 and the near-disastrous Apollo 13 —passed away on Aug. 7, 2025 at the age of 97.
Black Holes
Black holes are among the most enigmatic and fascinating objects in the universe. These regions of spacetime exhibit such strong gravitational effects that nothing—not even particles and electromagnetic radiation such as light—can escape from inside them. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.
'A Quiet Place Part III' is confirmed for 2027 with John Krasinski back in the director's chair
Paramount’s hit sci-fi horror franchise returns in 2027 with more ultrasonic alien invaders.
Spacecraft headed to DART asteroid crash site images 2 faint space rocks to boost planetary defense tactics
The techniques used to target the asteroids could also be employed in tracking hazardous asteroids and interstellar objects.
Satellites watch France's largest wildfire in 75 years burn an area larger than Paris
Satellite images revealed the scope of destruction in the south of France where an area larger than the country's capital Paris has been turned into ashes by a massive wildfire.
Scientists find oldest-known black hole in the universe: 'This is about as far back as you can practically go'
A newfound supermassive black hole from the dawn of the universe challenges how early cosmic giants formed.
See the August Perseids Battle the Waning Moon
Don’t let the brilliant Moon deter you from enjoying the best meteor shower of the year: the 2025 Perseids.
This White Dwarf Merged With Another Star To Form An Ultra-Massive White Dwarf
White dwarfs are remnants of main sequence stars like our Sun that have depleted their hydrogen. Their lives of fusion have come to an end, and they'll simmer with residual heat for trillions of years. Their lifespans are longer than the current age of the Universe.
What would Mars look like under an Earth-like blue sky? NASA's Perseverance rover just showed us
NASA's Perseverance Mars rover captured a breathtaking panorama of the Red Planet surface depicted in false-color under a blue sky.
Live coverage: SpaceX to launch 24 Starlink satellites on Falcon 9 rocket from Vandenberg
File: A Falcon 9 rocket stands ready to launch a Starlink mission. Image: SpaceX
SpaceX is gearing up for its first Falcon 9 rocket launch from the West Coast in nine days with a mission to deliver 24 optimized Starlink V2 Mini satellites into a polar, low Earth orbit.
'Alien: Earth' creators Noah Hawley and David W. Zucker want to 'mimic the feeling of discovery' you felt when watching the original (exclusive)
Ahead of Alien: Earth's two-episode premiere, we talked to series creator Noah Hawley and executive producer David W. Zucker.
Will the bright moon ruin the Perseid meteor shower, or is it still worth watching?
While moonlight might steal the spotlight, it won't steal the Perseids' show.
Hubble Telescope gives us our best look yet at the interstellar comet 3I/ATLAS (video, photo)
New Hubble Telescope imagery of the interstellar interloper comet 3I/ATLAS reveals a dusty coma and the beginning of a tail.
