NASA is marking the 20th anniversary of the space shuttle Columbia tragedy with somber ceremonies during its annual tribute to fallen astronauts.

Three rich businessmen are back on Earth with their astronaut escort after a pricey trip to the International Space Station.

SpaceX has launched three rich businessmen and their astronaut escort to the International Space Station for more than a week’s stay.

FILE - This photo provided by NASA shows SpaceX's Dragon undocking from International Space Station on Tuesday, Jan. 12, 2021. (NASA via AP)CAPE CANAVERAL, Fla. – The first private space station crew was introduced Tuesday: Three men who are each paying $55 million to fly on a SpaceX rocket. “This is the first private flight to the International Space Station. Russia has been in the off-the-planet tourism business for years, selling rides to the International Space Station since 2001. Lopez-Alegria, a former space station resident and spacewalking leader, called the group a “collection of pioneers."

The European and Russian space agencies skipped the 2020 Mars launch window, their life-sniffing Mars rover grounded until 2022 because of technical issues and COVID-19 restrictions. Three weeks later, SpaceX launched its biggest cargo shipment yet to the space station for NASA. If the repairs work and the capsule finally reaches the space station, the first Starliner astronauts could be flying by summer. The actor was in talks with NASA this year about filming a movie at the space station. “Whatever else can be said about the four years of the Trump administration, they have been positive for the U.S. civilian space program,” noted John Logsdon, professor emeritus at George Washington University’s Space Policy Institute.