We begin today with news that NASA and its international partners have arranged for an accelerated change of command ceremony on the ISS. That ceremony, which was to occur many weeks from now, will now occur on Monday, Jan. 12, at 2:35 p.m. EST (1835 GMT). You'll be able to watch it live on Space.com, courtesy of NASA.

NASA has spent the last few weeks getting ready for two spacewalks at the International Space Station (ISS), its first in eight months. But just hours before NASA astronauts Mike Fincke and Zena Cardman were due to begin the first of the two walks on Thursday,

It will be the first time in the space station’s 25-year history that a mission will be cut short because of a medical incident in space.

NASA officials reported Thursday that an unidentified member of Crew 11 was dealing with "a medical situation" that would require the crew to return to Earth sooner than anticipated.

NASA says a crew member on the International Space Station is unwell. The agency canceled a planned spacewalk for Thursday and is taking the rare step of ending the Crew-11 mission early.

A Falcon 9 rocket carrying about 40 payloads, including NASA's Pandora exoplanet satellite, is scheduled to lift off from California's Vandenberg Space Force Base during a 57-minute window that opens at 8:19 a.m. EST (1319 GMT and 5:19 a.m. local California time).

Scientists say all signs indicate the so-called "megaberg" could be just days or weeks from totally disintegrating.

NASA Administrator Jared Isaacman details the Trump administration's 'ambitious' national space policy, nuclear spaceships, culture at NASA and more on 'My View with Lara Trump.'