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.

Nasa is considering an early return of some crew aboard the International Space Station (ISS) because of a medical issue involving one member of a four-strong team. The unnamed crew member is described as stable, but the incident has already led to the last minute cancellation of a spacewalk.

Protests and clashes grow following deadly ICE encounter; NASA set to return Crew-11 from International Space Station; Protests escalating across Iran and more on tonight’s broadcast.

The supermassive black hole sitting at the heart of our galaxy is considered to be a slumbering giant. However, an international X-ray spacecraft has discovered that this wasn't always the case. It turns out this supermassive black hole, Sagittarius A* (Sgr A*), has erupted with powerful and dramatic flares over the course of the last 1,000 years.

The Propulsion and Structural Test Facility, also known as the T-tower, was built in 1957 by the Army Ballistic Missile Agency and later transferred to NASA in 1960. At the Marshall Center, the tower was used to develop the Saturn launch vehicles.