Scientists regrow amputated frog legs, leaving hope for humans

Researchers from Tufts and Harvard universities said they were able to regrow a functional frog leg and said the experiment will be tested in mammals next.

After 4 days of delays, SpaceX satellite launch sets Florida twilight sky aglow

A SpaceX satellite launch lit up the Florida coast Monday evening, leaving a pulsing, swirling exhaust plume glowing in the sky before sonic booms announced the booster’s safe return to land.

Meet the man who won a trip to space and gave it to a friend

He told his family and a few friends. He dropped hints to a couple of colleagues. So hardly anyone knew that the airline pilot could have — should have — been on board when SpaceX launched its first tourists into orbit last year.

NASA targeting springtime launch for Artemis-1 moon rocket

NASA is preparing for a critical test of its next-generation moon rocket, the Space Launch System, ahead of the Artemis-1 launch this spring.

Inflatable entertainment venue coming to the International Space Station

The International Space Station will be getting an upgrade to the orbiting laboratory in the form of an inflatable media studio and arena after an entertainment company selected Axiom Space to manufacture a new module.

Deadly fight between mountain lions caught on Belmont resident's video

Residents of Belmont woke up to a frightening scene in their front yard early Wednesday morning, a deadly fight playing out between two mountain lions.

Large 'potentially hazardous' asteroid passing by Earth on Tuesday

Astronomers are tracking a large and "potentially hazardous" asteroid that is set to make a relatively close pass by the Earth on Tuesday.

Teen who received life-saving transplant reacts to medical breakthroughs using pig organs

A human donor saved the life of 15-year-old Wilfre Mercedes. Today, after doctors successfully transplanted a pig's heart into a human patient, Mercedes is hopeful thousands of others on transplant waiting lists can go on living, just like he did.

Pfizer: Omicron-specific COVID-19 vaccine human trials to begin late January

Pfizer confirmed it plans to start human trials of its omicron-specific COVID-19 vaccine later this month, potentially making it available to the public as soon as March.

US surgeons perform 1st transplant of pig heart into human patient

U.S. doctors have transplanted a pig heart into a patient in a last-ditch effort to save his life — a first for medical science.

NASA aces James Webb telescope sunshield unfolding

NASA has aced the most complicated, critical job on its newly launched space telescope: unrolling and stretching a sunshade the size of a tennis court.