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Is it a spacecraft? An asteroid? Well, both. This small central speck is the first image of a spacecraft on its way home, carrying with it a sample from an asteroid hundreds-of-millions, if-not-billions-of-years old. The spacecraft is NASA’s OSIRIS-REx, the asteroid is Bennu.
At the heart of large galaxies like our Milky Way, there resides a supermassive black hole (SMBH.) These behemoths draw stars, gas, and dust toward them with their irresistible gravitational pull. When they consume this material, there’s a bright flare of energy, the brightest of which are quasars.
Namira Slim will become the first person from Pakistan to reach space on Virgin Galactic's 'Galactic 04' mission, which is slated to fly on Oct. 5.
Mikhail Ivanov, Oliver Philcox, and Marko Simonović won the New Horizons Award for their work on large scale structures — the strands and filaments of our universe which contain buried clues to its most fundamental properties.
If dark matter exists, then where are the particles?
Sierra Space's latest explosion with its LIFE module tested a metal plate inside an inflatable structure. The module will fly on a private successor to the International Space Station.
We can’t understand nature without understanding its range. That’s apparent in exoplanet science and in our theories of planetary formation. Nature’s outliers and oddballs put pressure on our models and motivate scientists to dig deeper.
The sun-kissing spacecraft watched as dust particles were displaced across 6 million miles (9.7 million kilometers).
In 1960, legendary physicist Freeman Dyson published his seminal paper “Search for Artificial Stellar Sources of Infrared Radiation,” wherein he proposed that there could be extraterrestrial civilizations so advanced that they could build megastructures large enough to enclose their parent star. He also indicated that these “Dyson Spheres,” as they came to be known, could be detected based on the “waste heat” they emitted at mid-infrared wavelengths. To this day, infrared signatures are considered a viable technosignature in the Search for Extraterrestrial Intelligence (SETI).
The star T CrB flares up every 80 years. A document from 1217 could help confirm its regularity.
A faint "bridge" of gas connects two colliding galaxies in a new photo from the Hubble Space Telescope.
About three billion years ago, rushing water on Mars carried mud and boulders down a steep slope and deposited them into a vast fan-shaped debris pile. NASA’s Curiosity Rover has been trying to reach a ridge overlooking the region, and now finally, the rover has reached this vantage point after three years of climbing. NASA released a 360-degree view image of the region, showing the jumble of rocks strewn about by the rushing water. Now, Curiosity is reaching out to touch and study them.
There may be less water ice trapped in the permanently shadowed regions on the moon than previously thought.
Comet Nishimura has surprised NASA by photobombing its STEREO spacecraft, revealing it seems to have held together after its brush with the sun on Sept. 17.
The Earth's atmosphere and the large size of the solar disk result in unequal days and nights, even on the equinox.
The astronauts of the Shenzhou 16 mission have been cultivating vegetables as part of their science experiment workload aboard the Tiangong space station.
The sixth episode of Ahsoka expands the "Star Wars" universe with new bits of mythology and iconography that support long-awaited returns.
The return capsule of NASA's OSIRIS-REx mission is scheduled to touch down in Utah on Sept. 24, bearing samples of asteroid Bennu. Here's how to watch the event live.
You’ve heard this story before. An advanced alien race comes to Earth. They offer peace and prosperity, but they hold a dark secret. One that could destroy humanity. That dark secret has varied over the years, from stealing our water, books on culinary advice, or communism, but the result is always the same. First contact with advanced extraterrestrials goes very badly for us. But in reality, how bad could it be? That’s the question a new study examines using game theory and Hobbesian philosophy.
Supermassive black holes are even more fearsome eaters than scientists suspected, thanks to a "delivery system" that could help them feed over months rather than hundreds of years.
A strong geomagnetic storm sparked by a coronal mass ejection triggered impressive aurora light shows around the world. We take a look at some of the best photographs here.
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