Size of supermassive black hole divulged by eating pattern
Friday, 13 August 2021 07:52
Astronomers have finally linked the size of a supermassive black hole to the spectral patterns generated by its eating habits.
Most nearby supermassive black holes are dormant. These long-sated, sleeping giants ate up their supply of gas and dust many millions of years ago, leaving them dark and quiet.
To identify dormant black holes, scientists must measure their gravitational i Army successfully tests high-energy laser weapon
Friday, 13 August 2021 07:52
The U.S. Army says it's developed a combat-capable prototype of a high-energy laser weapon.
The laser, which has been 24 months in the making, can be mounted on a Stryker military vehicle and used to defend troops against drones as well as rockets, artillery and mortars, according to an Army press release this week.
Over the summer, the new weapon was successfully tested in Fort Exponential growth of cubesats may be tapering off
Thursday, 12 August 2021 23:52
The use of cubesats has grown dramatically in recent years, but some are wondering if the form factor has reached the limits of its usefulness.
Electrodynamic tethers speed up satellite reentry timelines
Thursday, 12 August 2021 23:16
Tethers Unlimited’s Terminator Tape lowered a cubesat into Earth’s atmosphere in eight months, while a nearly identical satellite without a 70-meter conductive tail is expected to remain in orbit for more than a decade.
During close pass, Solar Orbiter captures Venus' glare
Thursday, 12 August 2021 19:12
On Aug. 9, 2021, ESA/NASA's Solar Orbiter spacecraft passed within 4,967 miles (7,995 kilometers) of the surface of planet Venus. In the days leading up to the approach, the Solar Orbiter Heliospheric Imager, or SoloHI, telescope captured this gleaming view of the planet.
The images show Venus approaching from the left while the Sun is off camera to the upper right. The planet's nightside, the part hidden from the Sun, appears as a dark semicircle surrounded by a bright crescent of light – glare from Venus' incredibly bright sunlit side.
"Ideally, we would have been able to resolve some features on the nightside of the planet, but there was just too much signal from the dayside." said Phillip Hess, astrophysicist at the Naval Research Laboratory in Washington, D.C. "Only a sliver of the dayside appears in the images, but it reflects enough sunlight to cause the bright crescent and the diffracted rays that seem to come from the surface."
Two bright stars are also visible in the background early in the sequence, before being eclipsed by the planet.
Euroconsult: Pandemic does little to slow smallsat sector
Thursday, 12 August 2021 19:08
The space sector in general has proven resilient throughout the COVID-19 pandemic, Alexandre Najjar, Euroconsult senior consultant, said Aug. 12 during a Small Satellite Conference side panel.
Rocket Lab wins order for three Photon missions from space manufacturing startup
Thursday, 12 August 2021 17:48
Rocket Lab will build and launch three of its Photon spacecraft to serve as platforms for a startup with space manufacturing aspirations.
Space Force to kick off new program to attract small businesses and startups
Thursday, 12 August 2021 17:43
The U.S. Space Force is launching a new industry outreach program expected to award up to $50 million in contracts to small businesses and startups.
Solar Orbiter captures Venus glare
Thursday, 12 August 2021 17:42
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On 9 August 2021, the ESA/NASA Solar Orbiter spacecraft passed within 7995 km of the surface of planet Venus during a gravity assist flyby. The Solar Orbiter Heliospheric Imager, SoloHI, captured this gleaming view of the planet in the days leading up to the approach.
The images show Venus approaching from the left while the Sun is off camera to the upper right. The planet's nightside, the part hidden from the Sun, appears as a dark semicircle surrounded by a bright crescent of light – glare from Venus’ incredibly bright sunlit side.
Some bright stars are also visible in the
Telesat close to completing Lightspeed funding
Thursday, 12 August 2021 16:59
Telesat is close to securing all the funds it needs for Lightspeed, after the Canadian government said it would inject more than a billion dollars into the low Earth orbit constellation.
Op-ed | Clearing space debris is good business
Thursday, 12 August 2021 16:56
Space debris removal is not just an environmental concern. It makes money for all parties involved.
New project will simulate life on Mars, pave way for NASA's 'next giant leap'
Thursday, 12 August 2021 14:23
As NASA prepares for its "next giant leap"—meaning astronauts on Mars—technology developed by Austin-based 3D printing construction company Icon is helping pave the way.
Icon has landed a subcontract with the National Aeronautics and Space Administration, and is teaming with Bjarke Ingels Group, to construct and design a habitation unit that will help the space agency better understand how people may be able to live on Mars in the future.
The company is building a 3D printed structure at NASA's Johnson Space Center in Houston for a series of missions designed to simulate what life could look like for astronauts living on Mars. Once completed, crews will stay in the structure at the Houston space center for one-year stints designed to mimic living conditions on the red planet.
Icon, which printed its first home using 3D technology in 2018, was co-founded by Jason Ballard with the goal of reimagining construction and housebuilding by using novel building techniques to make homes more affordable, resilient and sustainable. The startup has built a number of projects on Earth and has been working to take its technology to new heights by aiming to construct some of the first habitable structures in space.
NASA facility in Ohio named for native son Neil Armstrong
Thursday, 12 August 2021 13:52
A NASA research facility in Ohio has been renamed after astronaut Neil Armstrong, who was born in the state and returned shortly after he became the first man to walk on the moon.
Ohio's U.S. senators led the efforts to change the name of the NASA Plum Brook Station in Sandusky to the Neil A. Armstrong Test Facility.
Republican Rob Portman said he raised the idea with Armstrong in 2012, shortly before Armstrong's death, but he wasn't comfortable with the attention it would bring.
"It was never about him. It was about the mission," Portman said Wednesday at a ceremony marking the name change.
NASA and Armstrong's family supported renaming the research center, Portman said.
Armstrong's son, Mark Armstrong, said the early space missions showed people across the world that they could do things they could never imagine.
"That is more empowering than any scientific advancement," he said. "It's more empowering than the transistor. It's more empowering than the computer. Because it's unlimited. And that's what we have to remind people."
Armstrong was born just outside Wapakoneta in 1930, took flying lessons at a nearby airstrip and made his first solo flight at age 16.
U.S. Army brigade teaches military forces about the value of space
Thursday, 12 August 2021 13:02
Without satellites in space, military forces on the ground cannot shoot, move or communicate. That is the mantra that the Army’s 1st Space Brigade tries to instill with troops around the world.
Analysis can predict individual differences in cardiovascular responses to altered gravity
Thursday, 12 August 2021 12:46
With recent forays into space travel by business moguls like Jeff Bezos and Richard Branson, visiting the edge of space has never been more within the grasp of commercial travel. However, at these altitudes, passengers experience weightlessness, or more generally, altered gravity, that can affect the body's normal physiology.
In a study, Texas A&M University researchers have used a simulation-based approach to accurately predict the effects of altered gravity on an individual-by-individual basis. Their approach precludes the need for simultaneously testing hundreds of parameters for estimating the cardiovascular state of an individual; rather, it focuses on a handful of significant factors, increasing accuracy and saving time.
"Understanding human physiological responses in altered gravity environments becomes absolutely necessary if we want to push toward new frontiers in space travel," said Dr. Ana Diaz-Artiles, assistant professor in the Department of Aerospace Engineering. "But no two people are alike, and we need to develop tools to individualize physiological predictions quickly and precisely. Our study addresses that gap."
The researchers have reported the results of their study in The Journal of Applied Physiology.