A Dutch de-orbiting satellite named ‘Hiber Four’ is expected to offer some solution to the issue of outer space getting overcrowded due to the increasing number of satellites.
* * *
As of January 2021, there are more than 3,000 satellites orbiting Earth, as per a space database maintained by experts at the Union of Concerned Scientists (UCS), a non-profit science advocacy organization based in Massachusetts, United States.
A total of 3,372 satellites are operational in outer space; of these, 1,897 are American, 176 Russian, and 412 Chinese satellites, while 887 belong to the rest of the world.
Check out this next:
Strange region of space can damage orbiting satellites - SlashGear
Space is Too Crowded. De-orbiting Satellites Could Help | IE
Hiber Four is a second-gen satellite designed and built by Hiber's in-house engineers — stationed in the company's Amsterdam office. Both Hiber Four and its sister satellite Hiber Three — which is launching in March — are half the previous satellite generation's volume.
This is significant because the reduced mass lowers the cost to launch up to 50%, according to the Hiber press release shared with Interesting Engineering (IE). This next-gen design features onboard propulsion — enabling them to alter the satellite's orbital trajectory remotely.
Evolution of subhalo orbits in a smoothly-growing host halo potential | Monthly Notices of the
Go Ogiya, James E Taylor, Michael J Hudson, Evolution of subhalo orbits in a smoothly-growing host halo potential, Monthly Notices of the Royal Astronomical Society , 2021;, stab361, https://doi.org/10.1093/mnras/stab361
* * *
Oxford University Press is a department of the University of Oxford. It furthers the University's objective of excellence in research, scholarship, and education by publishing worldwide
And here's another article:
Today is: The day John Glenn orbits the earth
In 1962, Ohio's John Glenn became the first U.S. citizen to orbit the Earth and land safely in the Atlantic Ocean.
Glenn's five-hour spaceflight came almost a year after Soviet cosmonaut Yuri Gagarin orbited the Earth on April 12, 1961. Glenn was one of the Mercury Seven, military test pilots selected in 1959 by NASA as the nation's first astronauts. On Feb. 20, 1962, Glenn flew the Friendship 7 mission,
NASA's Moon-orbiting space station will begin construction thanks to SpaceX – BGR
NASA really, really wants to send humans back to the surface of the Moon, and it wants to accomplish that monumental task by 2024. Doing so will be difficult, especially with the setbacks that 2020 brought with it, but NASA hasn’t budged in its insistence that reaching the finish line by 2024 is indeed possible.
* * *
The Lunar Gateway is a monumental undertaking, and NASA originally planned to begin constructing it once the Space Launch System rocket platform was ready for showtime. Unfortunately, setbacks in the development of that rocket have put NASA in a tough spot, but SpaceX may be coming to the rescue. It’s now been announced that NASA will pay SpaceX over $330 million to help begin getting the components of the Gateway into space.
British Columbia Radio Amateur Copies Signal from Mars-Orbiting Satellite
As reported on Spaceweather.com , Canadian radio amateur Scott Tilley, VE7TIL, has snagged another signal from deep space. His latest conquest has been to copy the signal from China's Tianwen-1 (pronounced "tee-EN-ven") probe, which went into orbit around Mars on February 10. Tilley told Spaceweather.com that the probe's X-band signal was "loud and audible."
* * *
"It was a treasure hunt," Tilley told Spaceweather.com. He explained that while the spacecraft did post its frequency with the International Telecommunication Union (ITU), it was too vague for precise tuning (X band is between 8 GHz and 12 GHz).
Astronomers Find Two-Planet System around Backward-Spinning Star | Astronomy | Sci-News.com
K2-290A, the primary star in the triple stellar system K2-290, is tilted by 124 degrees compared with the orbits of both of its known planets, and has a wide-orbiting companion that is capable of having tilted the protoplanetary disk.
* * *
K2-290 , also known as BD-19 4173 and TIC 70803960, is a triple system located 897 light-years away in the constellation of Libra.
The primary star, K2-290A, is a late-type F star with a mass of 1.2 solar masses and a radius of 1.5 solar radii.
No comments:
Post a Comment