NASA lost its ability to launch humans from U.S. soil when the space shuttle retired. Now, companies and billionaire entrepreneurs are defining a new space age.

With the billionaire’s death last year, the aircraft’s future is uncertain.

Scott Kelly says he didn’t feel normal until 8 months after he returned from the International Space Station.

The black hole is at the center of Messier 87, a galaxy about 54 million light-years away.

Theorized but never imaged directly, black holes may finally be ready for their close-up.

Since President George H.W. Bush called for a return to the moon in 1989 to mark the 20th anniversary of the Apollo moon landing, several presidents have called for NASA to send astronauts to the moon or Mars with soaring rhetoric that’s never been matched by the resources or political resolve to make such promises come true. Now, on the 50th anniversary of the moon landing, it is the Trump administration’s turn.

NASA Administrator Jim Bridenstine said Monday that the agency will need additional funding to meet a White House mandate to land people on the moon by 2024.

The vice president said if NASA cannot pull off the monumental feat, "we need to change the organization, not the mission.”

The latest date for the first test of Boeing's Starliner capsule was to be in April, which was already pushed back repeatedly. Now that first flight — a test mission without any astronauts on board — is going to be delayed to at least August, according to two officials with knowledge of the situation.

Agency head dismayed by new delay, but “Senate Launch System” has strong political support.

It would mark a radical change from the way NASA had planned to return to the moon and would be a blow to the Space Launch System.

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