Scientists use stellar mass to link exoplanets to planet-forming disks
Thursday, 24 June 2021 02:15
Using data for more than 500 young stars observed with the Atacama Large Millimeter/Submillimeter Array (ALMA), scientists have uncovered a direct link between protoplanetary disk structures - the planet-forming disks that surround stars - and planet demographics.
The survey proves that higher mass stars are more likely to be surrounded by disks with "gaps" in them and that these gaps dire First clear view of a boiling cauldron where stars are born
Thursday, 24 June 2021 02:15
University of Maryland researchers created the first high-resolution image of an expanding bubble of hot plasma and ionized gas where stars are born. Previous low-resolution images did not clearly show the bubble or reveal how it expanded into the surrounding gas.
The researchers used data collected by the Stratospheric Observatory for Infrared Astronomy (SOFIA) telescope to analyze one of GMV develops a new maritime Galileo receiver
Thursday, 24 June 2021 02:15
Under the Advanced Shipborne Galileo Receiver Double Frequency (ASGARD) project the technology multinational GMV is collaborating with the defence and security company Saab, to develop a new civil, legislation-compliant, Galileo-signal-using maritime receiver.
Co-funded by EUSPA (former GSA), ASGARD aims to boost Galileo take up in maritime transport by developing shipborne e-GNSS (Europea Finnish company will test tiny, wooden satellite in space
Thursday, 24 June 2021 02:15
An educational space technology company in Finland, Arctic Astronautics Ltd., plans to launch this fall a tiny 2-pound satellite made mostly of wood, named Woodsat, as a science experiment and to encourage interest in space.
Small launch company Rocket Lab plans to carry the Woodsat into space aboard an Electron rocket lifting off from New Zealand.
The goal of the mission is to d Use of additional Metop-C and Fengyun-3 CD data improves regional weather forecasts
Thursday, 24 June 2021 02:15
Modern weather forecasts rely heavily on data retrieved from numerical weather prediction models. These models continue to improve and have advanced considerably throughout more than half a century. However, forecast reliability depends on the quality and accuracy of initialization data, or a sample of the current global atmosphere when the model run is started.
This process of bringing su PROTEUS transitions to Marine Corps Warfighting Lab
Thursday, 24 June 2021 02:15
Following recent successful experimentation with Marines at Camp Lejeune, North Carolina, DARPA's Prototype Resilient Operations Testbed for Expeditionary Urban Scenarios (PROTEUS) will transition to the Marine Corps Warfighting Laboratory (MCWL) in Quantico, Virginia.
PROTEUS comprises a suite of visual software training and experimentation tools that enables Marines from squad to battali Report: Space Force has to prepare for operations beyond Earth’s orbit
Wednesday, 23 June 2021 22:10
WASHINGTON — A new report published by the Air Force Research Laboratory suggests the U.S. Space Force has to prepare for a day when the moon and the volume of space around it could become the next military frontier.
Masten delays first lunar lander mission
Wednesday, 23 June 2021 21:37
WASHINGTON — Masten Space Systems is pushing back the launch of its first lunar lander mission by nearly a year, the latest in a series of delays by companies with NASA contracts to transport payloads to the moon.
Army, Navy satellite operations to consolidate under Space Force
Wednesday, 23 June 2021 20:31
WASHINGTON — The U.S. Space Force later this year will begin to take over the operation of 11 Navy narrowband communications satellites. It also will absorb Army units that currently operate military communications payloads, a Space Force official said June 23.
Nelson says Artemis plans pending decision on GAO protest
Wednesday, 23 June 2021 18:49
WASHINGTON — NASA Administrator Bill Nelson told a House committee June 23 that NASA is awaiting a decision from the Government Accountability Office on protests of the agency’s lunar lander contract before releasing more details on plans to return humans to the moon.
Astrocast mulls going public to expand to 100 satellites
Wednesday, 23 June 2021 17:40
TAMPA, Fla. — Swiss startup Astrocast is considering becoming a public company to expand its constellation for connecting internet of things (IoT) devices.
The venture has hired European investment bank Bryan, Garnier & Co to explore selling a 30-40% stake on the Euronext Growth stock exchange.
Europe seeks disabled astronauts, more women in space
Wednesday, 23 June 2021 16:50
ULA delays further use of enhanced upper-stage engine pending studies
Wednesday, 23 June 2021 16:01
WASHINGTON — United Launch Alliance will not be using an upgraded upper-stage engine in upcoming Atlas 5 missions as the company investigates the source of vibrations seen during a May 18 flight.
Video: Simulating atmospheric reentry in a plasma wind tunnel
Wednesday, 23 June 2021 13:23
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 spacecraft 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 satellite 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

