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Satellite

Space

DARPA's satellite repair robot makes house calls

There are over 400 geosynchronous satellites orbiting 22,000 mi (36,000 km) above the Earth. They are a vital part of global communications and represent billions of dollars in investments, but once they break down or run out of fuel, they're so much tin foil. DARPA has released a video outlining the agency's vision of a mobile robotic servicing system designed to rendezvous with and repair ailing telecommunications satellites.Read More

Space

ESA puts 3D-printed satellite antenna to the test

We can't print entire satellites yet, but the 3D printing of major components is moving forward with ESA unveiling a prototype 3D-printed radio antenna. Currently undergoing testing at ESA's Compact Antenna Test Facility in Noordwijk, the Netherlands, it's the space agency's first 3D-printed dual-reflector antenna incorporating a corrugated feed horn and two reflectors.Read More

Space

Solar sails to help keep pole-sitting satellites in their place

Pole sitting was a fad in the United States in the 1920s, but ESA is putting a modern orbital spin on the practice. Investigating advanced orbital mechanics, the space agency has concluded that it's possible to build a hybrid solar-sail/electric-propulsion satellite that could hover over either of the Earth's poles by balancing the pull of the Earth and the Sun.Read More

Space

NASA details CubeSats to launch aboard SLS

As its 2018 maiden flight edges closer, NASA has provided further details on what exactly the Space Launch System (SLS) will be carrying deep into space. The agency has today revealed 13 CubeSats in total will be loaded onto the most powerful rocket it has ever built, some of which will be deployed to inspect asteroids, while others will gather data on the Moon.Read More

Space

Goodbye ground control: Nanosatellites achieve first autonomous orbital maneuver

One of the advantages of bread loaf-sized nanosatellites is their potential to act as a swarm that can equal the power of a single larger satellite, but with more flexibility and at lower cost. Deep Space Industries has taken a major step in that direction in a successful test involving two autonomous Canadian satellites, which carried out the first orbital maneuver without human supervision.Read More

Science

Detailed seafloor gravity map brings the Earth's surface into sharp focus

Not so long ago the ocean floor was as unknown as the far side of the Moon. Now, an international team of scientists is using satellite data to chart the deep ocean by measuring the Earth's gravitational field. The result is a new, highly-detailed map that covers the three-quarters of the Earth's surface that lies underwater. The map is already providing new insights into global geology.Read More

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