It's a pulsar, named J0740+6620, and discrepancies in the timing of its pulses has allowed its mass to be calculated to 2.14 times that of the Sun, packed into a star just 30 kilometres (19 miles) across. To put that into perspective, the Sun has a diameter of 1.391 million km (~864,000 miles).
When NASA’s new drone Dragonfly arrives on Titan, Saturn’s largest moon, it won’t roll across the surface like Curiosity, Spirit, and Opportunity have on Mars. Instead, Dragonfly is a dual-rotor quadcopter that will fly from point to point, using a vertical takeoff and landing (VTOL) system. It leverages existing drone technology we have on Earth to make the system work.
Space is hard. That was the takeaway on Sept. 7, when the Indian Space Research Organisation (ISRO) lost contact with its Vikram lunar lander during an attempt to touch down at the moon's south pole. Of the 30 soft-landing attempts made by space agencies and companies around the world, more than one-third have ended in failure...
Try as we might, we just can’t prove Einstein wrong. One prediction of his theory of general relativity is that black holes are simple objects - and listening to them “ring” indicates this is true.
For six months, NASA has been chasing big plans to land humans near the south pole of the moon in 2024. That deadline came from Vice President Mike Pence in March and represented a significant increase in speed from the human moon landing's previous timeline, targeting 2028. The project has since been dubbed the Artemis program, a nod to the fact that NASA plans to include a female astronaut in the moon landing for the first time.
A top NASA manager cast doubt Wednesday on the space agency's ability to land astronauts on the moon by 2024. Kenneth Bowersox, acting associate administrator for human exploration and operations, told a Congressional subcommittee that NASA is doing its best to meet the White House-imposed deadline. But he noted: "I wouldn't bet my oldest child's upcoming birthday present or anything like that."
UCLA astronomers announced on September 11, 2019, that, last May, they caught the supermassive black hole at the center of our Milky Way galaxy having an unusually large meal of interstellar gas and dust. They caught the feast on May 13 (although of course it happened some 25,000 years ago earlier, since the center of the galaxy is about 25,000 light-years away).
The length of time that a liver can be kept outside the body has been extended to a day and a half by a new “supercooling” method, which for the first time has let human organs be safely stored at sub-zero temperatures. The technique, which lowers the organ’s temperature below zero without forming damaging ice crystals, could boost the number of liver transplants carried out and could also be used on other organs, says Reinier de Vries of Harvard Medical School in Boston.
Concrete made in space could one day help humans build habitats on the moon and Mars , new research shows. As part of a recent investigation aboard the International Space Station, astronauts made cement in microgravity for the first time, showing that it can harden and develop in space.
It's not easy to make big balls of hot gas. For starters, you need energy, and a lot of it. The kind of energy that can spread hot gas to a distance of over 25,000 light-years doesn't come easily to a typical galaxy. However, the peculiar orientation of the Fermi Bubbles -- extending evenly above and below our galactic center -- is a strong clue that they might be tied our central supermassive black hole, known as Sagittarius A*.