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Video: Simulating atmospheric reentry in a plasma wind tunnel
Correlated SCARAB model and the IR test data. Courtesy of DLR, HTG and KDA. Credit: European Space Agency

Simulating the burn-up during atmospheric reentry of one of the bulkiest items aboard a typical satellite using a plasma wind tunnel.

This Solar Array Drive Mechanism (SADM) has the essential task of keeping a satellite's solar wings trained on the Sun, maintaining mission operations.

But its bulky nature presents a problem in terms of space debris guidelines. When a reenters on an uncontrolled basis, the spacecraft operator has to prove that the on-ground casualty risk posed by its satellite is lower than 1 in 10 000.

So last year SADM manufacturer Kongsberg Defense & Aerospace (KDA) started an investigation supported by ESA, Hyperschall Technologie Göttingen GmbH (HTG) and the German Aerospace Center (DLR) to demonstrate the 'desmisability' of one of its products.

They began by modeling such a reentry using ESA's dedicated SCARAB (Spacecraft Atmospheric Reentry and Aerothermal Break-up) software and comparable resources, tweaking the SADM by switching one screw to lower-melting-point alumimium to promote an earlier, higher-altitude breakup.

Image: Jezero Crater's 'Delta scarp'

Wednesday, 23 June 2021 13:12
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Image: Jezero Crater’s "Delta Scarp"
Composed of five images, this mosaic of the Jezero Crater's "Delta Scarp" was taken on March 17, 2021, by the Remote Microscopic Imager (RMI) camera aboard NASA's Perseverance rover from 1.4 miles (2.25 kilometers) away. Scientists believe the 377-foot-wide (115-meter-wide) escarpment is a portion of the remnants of a fan-shaped deposit of sediments that resulted from the confluence between an ancient river and an ancient lake.
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Less metals, more X-rays!
Α Hubble Space Telescope image of the galaxy NGC 922, showing the regions with intense star formation (red colour). The purple contours show the X-ray emission, based on observations with the Chandra X-ray Observatory. The location of the bright ULXs is indicated by the circles, that occupy regions of intense star-forming activity.

A recent article published in the Monthly Notices of the Royal Astronomical Society, led by Dr. Kostas Kouroumpatzakis, of the Institute of Astrophysics at the Foundation for Research and Technology, Hellas (IA-FORTH), and the University of Crete, provides new insights into the connection between the X-ray luminosity of accreting black holes and neutron stars and the composition of the stellar populations they are associated with.

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SAN FRANCISCO – The Space Information Sharing and Analysis Center (ISAC) welcomed its newest member, Microsoft, June 23 with an announcement highlighting the tech giant’s cybersecurity expertise.

“Space cybersecurity is relatively unknown territory because we’re approaching and doing some things for the first time, fortunately through Space ISAC we have the opportunity to build a foundation for protection from a knowledge pool with deep security expertise,” Frank Backes, chair of the Space ISAC board of directors and Kratos Space Federal senior vice president, said in a statement.

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Microsoft is staking its claim on the space sector.

In the last year alone, the tech giant unveiled Azure Orbital, a service to move data from satellites into the cloud, and mobile cloud computing data centers for SpaceX’s Starlink constellation in low Earth orbit (LEO) and SES’ O3b medium Earth orbit (MEO) constellations.

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TAMPA, Fla. — Satellite propulsion startup Benchmark Space Systems has secured customers for a new ‘mobility-as-a-service’ business, which similar to a taxi ride will charge them based on the amount of propellant they use.

Burlington, Vermont-based Benchmark said its in-space mobility service significantly reduces upfront propulsion costs for on-orbit servicing, assembly and manufacturing (OSAM) ventures with indefinite propulsion needs.

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SAN FRANCISCO – Iceye is expanding to serve the Japanese market with the support of Makoto Higashi, the former Japan Space Imaging Corp. CEO and president, who will serve as Iceye’s general manager in Japan.

Within a year, Iceye plans to open an office in Tokyo and begin serving Japanese government and commercial customers with a 10-person staff, the company said in a June 23 news release.

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FFPA signing

WASHINGTON — The European Space Agency and European Union said the signing of a long-delayed partnership agreement heralded the start of a new and more cooperative relationship.

In a ceremony June 22 in Brussels, officials with the European Commission and ESA signed the Financial Framework Partnership Agreement (FFPA), a document that governs how the two organizations will work together in programs such as the Copernicus series of Earth observation satellites and Galileo navigation satellites.

Media briefing on ESA's astronaut selection

Wednesday, 23 June 2021 10:00
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Video: 00:51:52

Want to learn more about applications to ESA’s astronaut selection? Watch the replay of this media briefing to get an insight into the total number and spread of applications across all ESA Member and Associate Member states. Vacancies for the positions of astronaut and astronaut (with a physical disability) have closed on 18 June 2021, after a two-and-a-half-month-long application period.

UFO report could give us answers - or not

Wednesday, 23 June 2021 09:47
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College Station TX (SPX) Jun 23, 2021
Texas A and M University astronomer Nick Suntzeff has been involved with space research for 30 years and spent 20 years in Chile, where he helped co-discover dark matter. Below, he offers his thoughts about UFOs and whether or not we are alone in the universe. b>What can we expect from the government's official UFO report? br> /b> I have no idea what the report will say, but I doubt
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Washington DC (SPX) Jun 22, 2021
DARPA's Operational Fires (OpFires) program, which is developing and demonstrating new technologies for ground-launched medium-range hypersonic weapons, successfully completed full-scale static test firing of a unique second stage propulsion system. This high-performance, solid-fuel "throttleable" rocket motor can be turned off before burning through all of its fuel, potentially allowing a
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London, UK (SPX) Jun 23, 2021
A new analysis of known exoplanets has revealed that Earth-like conditions on potentially habitable planets may be much rarer than previously thought. The work focuses on the conditions required for oxygen-based photosynthesis to develop on a planet, which would enable complex biospheres of the type found on Earth. The study is published today in Monthly Notices of the Royal Astronomical Society
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Apply now to become an ESA Astronaut

Aspiring astronauts from across Europe are awaiting the next step in ESA’s astronaut selection, following the 18 June closure of the Agency’s first application period in 11 years.  

Hang out with Europe’s top space experts

Wednesday, 23 June 2021 07:01
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Space Safety & Security

ESA’s Space Safety Digital Festival is the first of its kind, giving you the unique opportunity to chat, mingle with and quiz Europe’s top experts working behind the scenes to keep us safe.

Does outer space end or go on forever

Wednesday, 23 June 2021 04:39
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Richmond VA (SPX) Jun 23, 2021
Right above you is the sky - or as scientists would call it, the atmosphere. It extends about 20 miles (32 kilometers) above the Earth. Floating around the atmosphere is a mixture of molecules - tiny bits of air so small you take in billions of them every time you breathe. Above the atmosphere is space. It's called that because it has far fewer molecules, with lots of empty space between t
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