The age of exoplanets began in 1992, when astronomers detected a pair of planets orbiting a pulsar. Then, in 1995, astronomers discovered the first exoplanet orbiting a main sequence star. As NASA's Kepler and TESS missions got going, the number of confirmed exoplanets continued to rise.
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Black Hole Merger Provides Clearest Evidence Yet that Einstein, Hawking, and Kerr were Right
In February 2016, scientists at the Laser Interferometer Gravitational wave Observatory (LIGO) announced the first detection of gravitational waves (GW). These ripples in space time, originally predicted by Einstein's Theory of General Relativity, are caused by the merger of massive objects (like neutron stars and black holes). Since then, gravitational wave observatories like LIGO, VIRGO, and the Kamioka Gravitational Wave Detector (KAGRA) have detected around 300 gravitational wave (GW) events.
Where are all the 'hot Neptune' exoplanets? Orbital chaos may have booted them out
A new program has discovered chaos in a nearby planetary system, which could explain the existence of a phenomenon astronomers call the hot-Neptunian desert.
'It was the realization of a dream that we had chased for decades.' Powerful cosmic winds around neutron star reveal secrets of monster black holes
Mysteriously powerful cosmic winds around neutron star may be 'game-changer' for understanding monster black holes
Catch a Far-Flung Partial Solar Eclipse This Weekend
A remote solar eclipse ends the final season of 2025.
Practicing for Mars Here on Earth
Before we get to Mars, we’re going to have to practice. And develop radical leaps in technology, but also practice. A Mars mission will be utterly unlike anything attempted by humanity. We’re talking about a group of settlers, maybe as few as an initial team of four, traveling over a hundred million miles away from home to a literally alien environment, one that is so hostile to life that nothing lives there, and turn it into a home.
Doubt Creeps Into Hayabusa 2's Planned Visit To Its Next Asteroid
In November 2019, Japan's Hayabusa 2 mission departed the asteroid Ryugu after 1.5 years of observations. It had successfully collected a sample from the near-Earth object and in December 2020, the spacecraft returned the valuable sample to Earth. If its mission had ended there, it would've been deemed one of the most successful and challenging missions ever conducted.
Bad News And Good News: Hycean Worlds Aren't Real, But Earth's Water Isn't Unusual
K2-18b is a sub-Neptune about 124 light-years away from Earth first detected in 2015. Follow-up research found water vapour in its atmosphere, indicating that it could be a water planet, or what is called a 'hycean planet'. Hycean planets have thick hydrogen atmospheres and deep, global or near-global oceans. Or so scientists thought.
Rock the cosmos: An asteroid trivia quiz
This asteroid quiz is your launchpad to discovery
Early Galaxy Hosts Black Hole with the Mass of 50 Million Suns
Astronomers using the James Webb Space Telescope have confirmed that, just 800 million years after the Big Bang, there is a galaxy that contains a supermassive black hole — and not much else.
How 'Foundation' star Pilou Asbæk' tapped into that crazy mad vibe' to bring Asimov's villain to life (exclusive)
Foundation star Pilou Asbæk tells Space.com how he channeled Asimov villain The Mule in Season 4 of Apple TV's sci-fi saga.
'Star Trek: Strange New Worlds' showrunners explain Season 3's intense cosmic horror finale (exclusive)
Akiva Goldsman and Henry Alonso Myers share thoughts on this serious bittersweet episode
Can a spacecraft land on a teeny tiny asteroid? Japan's Hayabusa2 will certainly try
Hayabusa2's new target, asteroid 1998 KY26, is just 36 feet (11 meters) across, which will make landing on it challenging.
See the crescent moon take flight with Venus in the predawn sky on Sept. 19
See a sickle moon with Venus and the bright star Regulus early on Sept. 19.
Hurry, this Paramount Plus deal ends today and saves a huge 50% — at just $29.99 for an entire year, it's an 8 cents a day streaming bargain
Save up to $60 on an annual subscription to Paramount Plus, the home of all Star Trek content, as well as a huge selection of Sci-Fi titles and entertainment.
Northrop Grumman cargo ship reaches space Station
Northrop Grumman’s Cygnus XL cargo ship on final approach to the International Space Station early Thursday. Image: NASA
Running a day late because of a software issue, Northrop Grumman’s Cygnus XL cargo ship caught up with the International Space Station early Thursday and then stood by while the lab’s robot arm latched onto a grapple fixture to wrap up a successful, if extended, rendezvous.
Northrop Grumman's biggest-ever cargo spacecraft arrives at ISS on its debut mission
Northrop Grumman's new "Cygnus XL" cargo ship reached the International Space Station this morning (Sept. 18), after a delay, delivering about 11,000 pounds of supplies to the orbiting lab.
What time is the partial solar eclipse on Sept. 21?
Earth will see a deep partial solar eclipse on Sept. 21 — here's who can watch and when.
NASA's Artemis astronauts practice moon landings in Colorado | Space photo of the day for Sept. 18, 2025
NASA is collaborating with the Colorado Army National Guard at its training center in Gypsum to help Artemis astronauts prepare for moon landings.
Thames and Kosmos planetarium star projector review
Both educational and mesmerizing, the Thames and Kosmos planetarium star projector is a great gift for kids.
SpaceX launches 28 Starlink satellites to orbit on 117th Falcon 9 flight of 2025
SpaceX launched 28 more of its Starlink internet satellites today (Sept. 18), sending them aloft from Cape Canaveral Space Force Station in Florida.
