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Category: satellites – Page 29

For its latest Hyperspace Challenge accelerator, the U.S. Space Force selected three startups specializing in satellite propulsion, picks reflecting the military’s growing interest in nimble satellites that can maneuver to outplay adversaries.

This marks a shift for the Pentagon, which traditionally has launched satellites into orbit and restricted their movements to conserve fuel. But with rivals fielding maneuverable spacecraft, U.S. officials are calling for a shift to “dynamic space operations,” enabled by autonomous refueling and other in-orbit services.

“Having the ability to refuel would really open new possibilities,” said John Plumb, assistant secretary of defense for space policy. He said the Pentagon is encouraged to see commercial companies developing technologies for in-orbit logistics that also have significant utility for the military.

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In a new breakthrough, researchers have used a novel technique to confirm a previously undetected physics phenomenon that could be used to improve data storage in the next generation of computer devices.

Spintronic memories, utilized in advanced computers and satellites, leverage the magnetic states produced by the intrinsic angular momentum of electrons for data storage and retrieval. Depending on its physical motion, an electron’s spin produces a magnetic current. Known as the “spin Hall effect,” this has key applications for magnetic materials across many different fields, ranging from low-power electronics to fundamental quantum mechanics.

More recently, scientists have found that electrons are also capable of generating electricity through a second kind of movement: orbital angular momentum, similar to how Earth revolves around the sun. This is known as the “orbital Hall effect,” said Roland Kawakami, co-author of the study and a professor in physics at The Ohio State University.

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Watch live coverage as SpaceX launches a Falcon 9 rocket with 23 second-generation Starlink internet satellites. Liftoff from pad 40 at Cape Canaveral Space Force Station is scheduled for tonight at 11:01 p.m. EST (0401 UTC). The first-stage booster, making its third flight, will land on the drone ship ‘A Shortfall of Gravitas’ about eight and a half minutes into the flight.\

Our live coverage from Cape Canaveral, with commentary by Will Robinson-Smith, will begin about an hour before launch.\

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Nature Communications published research by an international team from Wits and ICFO-The Institute of Photonic Sciences, which demonstrates the teleportation-like transport of “patterns” of light—this is the first approach that can transport images across a network without physically sending the image and a crucial step towards realizing a quantum network for high-dimensional entangled states.

Quantum communication over long distances is integral to and has been demonstrated with two-dimensional states (qubits) over very long distances between satellites. This may seem enough if we compare it with its classical counterpart, i.e., sending bits that can be encoded in 1s (signal) and 0s (no signal), one at a time.

However, quantum optics allow us to increase the alphabet and to securely describe more in a single shot, such as a unique fingerprint or a face.

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HELSINKI — China sent the classified Yaogan-41 optical satellite towards the geostationary belt Friday using the country’s largest launch vehicle.

The sixth Long March 5 rocket lifted off from the coastal Wenchang Satellite Launch Center at 8:41 a.m. Eastern (1341 UTC) Dec. 15. The China Aerospace Science and Technology Corp. (CASC) announced launch success around an hour later.

CASC revealed the payload to be the Yaogan-41 (“remote sensing-41”) satellite. A new, elongated 18.5-meter-long, 5.2-meter-diameter payload fairing shrouded the spacecraft. Previous fairings were 12.3 meters long.

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WASHINGTON — Rocket Lab successfully launched a Japanese radar imaging satellite on the first flight of its Electron rocket since a failure nearly three months ago.

The Electron rocket lifted off from the company’s Launch Complex 1 in New Zealand at 11:05 p.m. Eastern Dec. 14. The vehicle deployed its payload, the QPS-SAR-5 or Tsukuyomi-1 satellite for Japanese company iQPS, nearly 57 minutes after liftoff into a 575-kilometer orbit.

The launch was the first for Electron since a Sept. 19 failure during a launch of another radar imaging satellite for Capella Space. On that mission, the first stage performed as expected but the engine of the second stage appeared to shut down immediately after ignition, preventing it from reaching orbit.

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The SpaceX Falcon 9 rocket is the vehicle that brings satellites, Dragon cargo spacecraft and Crew Dragon spacecraft to orbit.

Among its many uses, SpaceX regularly launches Falcon 9 to bring its Dragon spacecraft to the International Space Station. Dragon made the first private spacecraft visit ever there in October 2012 and has run more than 25 cargo missions in the years since. Since 2020, SpaceX also used Falcon 9 for crewed missions to the ISS, on behalf of NASA and other customers.

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SpaceX performs a Christmas themed roll out of the next Starship to fly and relativity fires up its most powerful engine, while Amazon tests a spacecraft inters satellite laser link communication system and Rocket Lab achieves a successful launch of the QPS SAR 5 satellite.

Questions to inspire discussion.

What milestone did Relativity achieve at NASA’s Stennis Space Center?
—Relativity successfully tested their fullscale Eon R methalox engine at NASA’s Stennis Space Center, marking a significant milestone in the development of the Tran R rocket.

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