Science News Roundup: Four astronauts begin six-month stay on space station; Pfizer vaccine is 95% effective in trial and more

Immune protection against severe reinfection appears lasting 'SpaceX, this is Resilience': Four astronauts begin six-month stay on space station Four astronauts riding a newly-designed spacecraft from Elon Musk's rocket company SpaceX greeted their new crewmates aboard the International Space Station on Tuesday after successfully docking in a landmark achievement for private space travel.

Following is a summary of current science news briefs.

COVID-19 survivors may have long-lasting immunity; Pfizer vaccine is 95% effective in trial

Immune protection against severe reinfection appears lasting

'SpaceX, this is Resilience': Four astronauts begin six-month stay on space station

Four astronauts riding a newly-designed spacecraft from Elon Musk's rocket company SpaceX greeted their new crewmates aboard the International Space Station on Tuesday after successfully docking in a landmark achievement for private space travel. In NASA's first full-fledged mission ferrying a crew into orbit on a privately-owned spacecraft, the SpaceX Crew Dragon capsule dubbed Resilience opened its hatch door shortly after 1 a.m. EST (0600 GMT), two hours after docking and 27 hours after launching atop a Falcon 9 rocket from Cape Canaveral, Fla.