The Oklahoma congressman’s nomination languished for more than seven months as senators raised objections to his record, and now additional concerns have been raised.
The space rock crashed in a desert in Sudan in 2008, and the flaws in its embedded minerals are like nothing seen in today’s solar system.
The spacecraft will scan the sky for planets orbiting nearby star systems, another step in the long search for signs of life in the Milky Way. The launch on Wednesday was postponed from Monday.
NASA’s TESS spacecraft will spend two years searching the sky for nearby alien worlds.
Ellen Stofan will become the first woman to head the National Air and Space Museum.
Pairing astronomers’ algorithms for star-hunting with drones equipped with infrared cameras, scientists have developed a new tool kit to help conservation and fight poaching.
China lost control of the craft in 2016, and sky watchers had been waiting months for it to re-enter the atmosphere, unsure where or when it would land.
The space agency announced on Tuesday that its successor to the Hubble telescope has hit a series of testing snags, pushing back a planned launch next year.
Experts predict the abandoned space station, Tiangong-1, will fall back to Earth around this weekend. But the risk to anyone on the ground is almost nil.
NASA’s new spacecraft, to be launched next month, will give scientists a much clearer view of the planets orbiting stars near to us.
Mr. Musk deleted the Facebook pages of two of his companies, SpaceX and Tesla. He and the Facebook C.E.O., Mark Zuckerberg, have, er, not always gotten along.
To sustain the commercial space race, we need to streamline and coordinate rules to manage the proliferation of private satellites.
The cosmologist’s ashes will be buried there later this year, near a few legendary scientists like Darwin and Newton.
A rash of news stories this week stemmed from a misinterpreted NASA update from January.
Steve is a glowing strip in the night sky, not far from the northern lights. It was named after a cartoon. Now scientists have learned more.
The cosmologist not only overturned our imaginations, he became an icon of mystery, curiosity and determination to understand this place we are in.
Stephen Hawking, one of the greatest physicists of our time, died on Wednesday. He is immortalized by his brilliant research, but also by his pop culture appearances.
Dr. Hawking captured the public imagination and endeared himself to tens of millions of people around the world with his exploration of black holes and gravity.
A physicist and best-selling author, Dr. Hawking did not allow his physical limitations to hinder his quest to answer “the big question: Where did the universe come from?”
Mr. Lightfoot has filled in since the end of the Obama administration. The agency has never gone this long without a leader confirmed by the Senate.