Companies are increasingly looking to space as a place of business, and the National Aeronautics and Space Administration has been changing in several different ways, especially by partnering with corporations to develop new technologies. Earlier this year NASA announced it would open the International Space Station to private astronauts, with short missions beginning as soon as 2020. Additionally, NASA said...

Forty-five years after his iconic moon landing, former astronaut Buzz Aldrin is set to reunite with the ship that recovered the Apollo 11 crew from the Pacific Ocean when they returned to Earth from their historic space mission.

A brilliant flurry in the sky near the Unicorn constellation is expected Thursday night over the eastern half of North America and all South America.

Vice President Mike Pence arrived in California Wednesday for a two-day visit to support President Donald Trump and tour a NASA facility.

Mercury is putting on a rare celestial show today, parading across the sun in view of most of the world. The solar system’s smallest, innermost planet will resemble a tiny black dot Monday as it passes directly between Earth and the sun. It begins at 7:35 a.m. EST. The entire 5 ½-hour event will be visible, weather permitting, in the...

A 17-year-old Peninsula student won the $250,000 top prize in the fifth annual Breakthrough Junior Challenge, a global science video competition, the Breakthrough Prize Foundation announced Sunday.

Even the sun is getting into the Halloween spirit.

The astronauts who took part in the first all-female spacewalk are still uplifted by all the excitement down on Earth. International Space Station resident Jessica Meir, from Maine, said Monday that when she floated outside last week, she wasn’t thinking about whether she was going out with a man or woman because everyone is held to the same standard.

It has given us some of the most amazing images from space. And now it has landed, for a short time, in the Silicon Valley.

A jet plane with cutting-edge technology and an incredibly powerful telescope is visiting NASA Ames. Scientists and students alike are geeking out. Scott Budman reports.

The world’s first all-female spacewalking team made history high above Earth on Friday, replacing a broken part of the International Space Station’s power grid. As NASA astronauts Christina Koch and Jessica Meir completed the job with wrenches, screwdrivers and power-grip tools, it marked the first time in a half-century of spacewalking that men weren’t part of the action. They insisted...

NASA has moved up the first all-female spacewalk to this week because of a power system failure at the International Space Station.

The first all-female spacewalk is back on, six months after a suit-sizing flap led to an embarrassing cancellation.

While most people won’t have the opportunity to board a spaceship, NASA’s “Send Your Name to Mars” campaign allows participants to make their mark on the greater cosmos — but sign up soon.

UC San Diego alum and now NASA astronaut Jessica Meir will embark on her first launch into space on Wednesday to start a six-month mission at the International Space Station.

Saying humanity is waging war with the planet, the head of the United Nations isn’t planning to let just any world leader speak about climate change at Monday’s special “action summit.” Only those with new, specific and bold plans can command the podium and the ever-warming world’s attention, Secretary-General Antonio Guterres said. So sit down, Brazil. Sit down, Saudi Arabia....

A top NASA manager is casting doubt on the space agency’s ability to land astronauts on the moon by 2024.

Brad Pitt, star of the new space movie “Ad Astra,” had a burning question for a real-life astronaut. “Who was more believable? Clooney or Pitt?”

Is Pluto a planet, as generations of schoolchildren learned? Or is it really a dwarf planet, as astronomy’s official governing body has determined? NASA administrator Jim Bridenstine says it’s the former. “Just so you know, in my view Pluto is a planet,” he told reporters Aug. 23 while touring an aerospace engineering lab in Boulder, Colorado. “It’s the way I...

Fifty years after Neil Armstrong made his famous moon walk, baseball fans visiting San Francisco’s Oracle Park are encountering an exact replica of his space suit, crafted by a San Rafael company.