Business
Germany has blocked a complete Chinese takeover of a satellite startup on national security grounds, sources close to the matter told AFP Thursday, as Berlin takes an increasingly hard line against Beijing.
Sep 14, 2023
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4
Energy & Green Tech
The idea of space-based solar power (SBSP)—using satellites to collect energy from the sun and "beam" it to collection points on Earth—has been around since at least the late 1960s. Despite its huge potential, the concept ...
Aug 15, 2023
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11
Telecom
Amazon is so eager to get its first test satellites for its Project Kuiper internet constellation up into space that it has decided to switch rides again.
Aug 14, 2023
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28
Business
Amazon said Friday it will invest $120 million to build a satellite construction facility at NASA's Kennedy Space Center, as part of its plans to launch a space internet service to rival SpaceX's Starlink.
Jul 21, 2023
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1
Electronics & Semiconductors
Strontium titanate (SrTiO3), an oxide of strontium and titanium with a perovskite structure, has many advantageous properties, including spin-orbit coupling, electrical tunability, and unconventional superconductivity. Compared ...
Engineering
Australian researchers have demonstrated that perovskite solar cells damaged by proton radiation in low-Earth orbit can recover up to 100% of their original efficiency via annealing in thermal vacuum.
Jul 18, 2023
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68
Engineering
NASA's first two-way laser relay system completed its first year of experiments on June 28—a milestone for a game-changing technology that could be the future for sending and receiving data from space.
Jun 29, 2023
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1
Other
On May 11, 2020, a deadly threat flew from Los Angeles to New York City in under nine minutes. It was a 20-ton Chinese Long March 5B rocket body passing around 60 miles overhead.
Mar 30, 2023
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Electronics & Semiconductors
On-chip distributed radiation sensors and current-sharing techniques can be used to reduce the impact of radiation on the radio and power consumption of small satellites, respectively, as shown by scientists from Tokyo Tech. ...
Feb 21, 2023
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7
Engineering
The US military has now shot down four high-altitude objects that had entered American and Canadian airspace, raising questions about their purpose and origin.
Feb 15, 2023
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In physics, an orbit is the gravitationally curved path of one object around a point or another body, for example the gravitational orbit of a planet around a star.
Historically, the apparent motion of the planets were first understood in terms of epicycles, which are the sums of numerous circular motions. This predicted the path of the planets quite well, until Johannes Kepler was able to show that the motion of the planets were in fact elliptical motions.[citation needed] Isaac Newton was able to prove that this was equivalent to an inverse square, instantaneously propagating force he called gravitation.[citation needed] Albert Einstein later was able to show that gravity is due to curvature of space-time, and that orbits lie upon geodesics. This is the current understanding.
This text uses material from Wikipedia, licensed under CC BY-SA
