Karen Weise    Jeff Bezos was gaining ground on Elon Musk’s SpaceX and Starlink. Thursday’s rocket explosion on a launchpad creates a major setback.

Kenneth Chang    The rocket, built by the Jeff Bezos-owned space company, was to carry 48 satellites into space. Blue Origin reported on social media that all...

Katrina Miller    The second full moon of May will look smaller and dimmer than usual.

Robin George Andrews    For a split second, a fireball outshone the rivers of molten lava flowing from the Philippines’ most active volcano.

Kenneth Chang    The contracts, announced on Tuesday, are part of the space agency’s efforts to establish a moon base.

Ryan Mac    The ways it set up its board and Mr. Musk’s pay appear to benefit him at the expense of other shareholders, corporate governance experts said.

Katrina Miller    With 263 antennas spread across the U.S. and Mexico, the Next Generation Very Large Array, would join a new wave of radio astronomy.

Danielle Dowling    On Aug. 12, parts of Greenland, Iceland, Spain and Portugal will experience the thrill of daytime darkness. Here’s where you can witness the cosmic...

Kenneth Chang    The 12th test flight of SpaceX’s gargantuan rocket launched on Friday evening and ended its journey in the Indian Ocean just over an hour later.

Conor Dougherty    The current season of this space drama is set largely on Mars. The creators say this alternate world could have been possible if the nation had...

Jonathan O’Callaghan    Neptune’s moons have long provided evidence of a cataclysm four billion years ago. A new study suggests one moon may have made it through.

Emma Bubola, Edward Wong and Sarah Pabst    The U.S. has pressed Argentina and Chile to review two Chinese telescope projects in the Andean deserts. Astronomers are worried about setbacks to...

Michael Levenson    The Pentagon on Friday released online what it called new, never-before-seen files, dating back decades, related to unidentified flying objects.

Robert D. McFadden    He gave readers a comprehensive and lyrical account of the historic mission in 1969. His science coverage as a Pulitzer-winning journalist and an...

Ryan Mac    Gwynne Shotwell, the president and chief operating officer, is the adult-in-the-room foil to Mr. Musk as SpaceX prepares for a blockbuster initial...

Ryan Mac    The 135 share price means Elon Musk’s rocket maker is poised to exceed the 2019 initial public offering of Saudi Aramco in both valuation and money...

Victor Mather    A huge noise rattled part of the state on Thursday. Multiple theories have been put forward, but the mystery remains.

Kenneth Chang    The giant rocket was scheduled to lift off on Thursday after a seven-month pause. SpaceX could try again as soon as Friday.

Ryan Mac and Lauren Hirsch    Mr. Musk’s rocket and satellite maker disclosed its financial performance as it prepares to go public in what is set to be one of the largest...

Michael Harmon    On nighttime excursions in dark-sky hot spots like Norway, New Zealand and Nevada, all you have to do is relax and look up. The stars will do the...