Science in Space: Robotic Helpers
Friday, 03 November 2023 02:53
ESA hones 3D Printed electromagnetic coils for spaceflight
Friday, 03 November 2023 02:53
Researchers find gravitational lensing has significant effect on cosmic birefringence
Friday, 03 November 2023 02:53
SpaceRake wins $1.8 million in SDA funding for optical communications terminals
Thursday, 02 November 2023 23:15
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Virgin Galactic carries researchers on fifth commercial suborbital flight
Thursday, 02 November 2023 22:27
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Space Force takes over missile-warning ground stations previously run by the Army
Thursday, 02 November 2023 21:47
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Viasat cutting global workforce by 10% after Inmarsat acquisition
Thursday, 02 November 2023 20:57
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Scientists describe deployment of three-body chain-type tethered satellites in low-eccentricity orbits
Thursday, 02 November 2023 19:46
Recently, the tethered satellite system (TSS) has been used in Earth observations, space interferometry and other space missions, due to its potential merits. The tethered TSAR (tomographic synthetic aperture radar) system is a group of tethered SAR satellites that can be rapidly deployed and provide a stable baseline for 3-dimensional topographic mapping and moving target detection.
Successful deployment is critical for TSAR tethered systems.
Several control methods, including length, length rate, tension, and thrust-aided control, have been proposed over the years. Among them, adjusting tension is a viable yet challenging approach due to the tether's strong nonlinearity and underactuated traits.
Current tether deployment schemes focus on two-body TSS, with little emphasis on multi-TSSs. In a research article recently published in Space: Science & Technology, a research team led by Zhongjie Meng from Northwestern Polytechnical University has developed a new deployment strategy for a 3-body chain-type tethered satellite system in a low-eccentric elliptical orbit.
Image: High-power thruster qualification testing for Gateway
Thursday, 02 November 2023 18:29
The blue hue of the Advanced Electric Propulsion System (AEPS) is seen inside a vacuum chamber at NASA's Glenn Research Center in Cleveland during recent thruster qualification testing. This 12-kilowatt Hall thruster is the most powerful electric propulsion thruster in production, and it will be critical to future science and exploration missions at the moon and beyond.
The blue plume is a steady stream of ionized xenon gas ejected to produce low, highly efficient thrust. These electric propulsion systems accelerate spacecraft to extremely high speeds over time using only a fraction of the fuel chemical propulsion systems require, making electric propulsion an excellent choice for deep-space exploration and science missions.
Three AEPS thrusters will be mounted on the Power and Propulsion Element, a foundational component of Gateway. The small lunar space station is critical to the agency's Artemis missions that will help prepare for human missions to Mars. The Power and Propulsion Element will provide Gateway with power, high-rate communications, and allow it to maintain its unique orbit around the moon.
The AEPS thruster recently returned to NASA Glenn to continue qualification testing to certify the thrusters for flight.
Norway inaugurates satellite launch site
Thursday, 02 November 2023 16:55
Norway on Thursday joined the race to launch satellites from the European continent by inaugurating a new spaceport on the island of Andoya, north of the Arctic Circle.
Isar Aerospace said the "Andoya Spaceport" was to "become the first operational orbital spaceport in continental Europe to finalize the construction of the launch site."
It was inaugurated at a ceremony attended by Norway's Crown Prince Haakon nine months after the inauguration of the Esrange spaceport in neighboring Sweden.
As tensions have grown with Russia, depriving Europe of access to its cosmodromes and launchpads, the site seeks to help European countries strengthen their own capacity for putting small and medium-sized satellites into orbit.
The launch base, which eventually will have several launch pads, was built by Norwegian public company Andoya Space, on a site which until now has only been used for firing suborbital scientific experiment rockets.
Spectrum, a two-stage craft capable of carrying up to one metric ton and developed by the German start-up Isar Aerospace, is scheduled to be the first rocket to be launched from island which is located near the idyllic Lofoten archipelago.
Watch the Space Summit live
Thursday, 02 November 2023 16:24
At the Space Summit on 6 November 2023, Ministers of ESA’s Member States will raise Europe’s ambition to drive forward space for a green future, take decisive steps in exploration, and ensure Europe’s access to space, while preparing a paradigm shift towards a more competitive next generation of launchers.
Relive the Earth Observation Commercialisation Forum
Thursday, 02 November 2023 11:30
ESA’s first Earth Observation Commercialisation Forum took place at ESA Headquarters in Paris on 30–31 October 2023. The event saw investors, institutions, entrepreneurs and different-sized companies from the Earth observation sector come together to discuss the commercial potential and challenges of Earth observation. Revisit the event by watching the streaming replay.
NASA astronauts Moghbeli and O'Hara embark on rare all-female spacewalk
Thursday, 02 November 2023 11:00
The importance of the Earth's atmosphere in creating the large storms that affect satellite communications
Thursday, 02 November 2023 11:00