October 20, 2017

Watch live: Space station spacewalk underway

October 20, 2017

Staging NASA’s third spacewalk in 15 days, two astronauts floated outside the International Space Station Friday to install a new high-definition camera, replace a faulty camera on a recently installed robot arm grapple fixture, swap out a fuse in a robot arm payload carrier and perform a few other lower-priority tasks.

NASA’s Dawn mission gears up for close look at Ceres

October 20, 2017

NASA’s Dawn spacecraft will remain at Ceres for the rest of its mission, heading closer to the asteroid belt’s largest resident than ever before to obtain new measurements of ice, salts and a tenuous intermittent atmosphere detected around the dwarf planet, the space agency announced Thursday.

World’s largest methane-fueled rocket engine test-fired by Blue Origin

October 20, 2017

Blue Origin has conducted the first hotfire test of its BE-4 rocket engine in West Texas, a powerplant fueled by liquified natural gas and liquid oxygen that will power the company’s heavy-lift New Glenn rocket and perhaps United Launch Alliance’s next-generation Vulcan launcher, officials announced Thursday.

Cassini results still keeping scientists busy

October 19, 2017

Scientists examining data from the Cassini mission’s final months reported this week unexpected measurements of Saturn’s gravity field and outer atmosphere, suggesting they may have to revisit theories about the planet’s rings and the forces that generate magnetic fields.

Neutron star collision an astronomical gold mine

October 17, 2017

On Aug. 17, gravity waves rippled through the solar system, slightly squeezing and stretching the space Earth occupies, the result of a catastrophic collision of two compact-but-massive neutron stars, producing a so-called “kilonova” explosion that seeded the local environment with a flood of heavy elements ranging from gold and platinum to uranium and beyond, scientists said Monday.

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