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Copernical Team

Copernical Team

Thursday, 05 September 2024 19:41

Managing space debris through space law

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Managing space debris through space law
Credit: NASA

It's becoming increasingly crowded in the orbits around Earth that are popular for space travel. And that's not just due to satellites—there's also more waste material, which is compromising safety. Ph.D. candidate Zhuang Tian is conducting research into the legal aspects of discarded space equipment. Whoever leaves debris behind should take responsibility and clean it up.

In the near future, probes with robotic arms will be hovering in orbit. The arms will have four metal tentacles spread out like a spider's legs, ready to catch a discarded satellite where the probes maneuver minutely. It's one of the techniques the company ClearSpace is currently simulating—only on Earth for the time being.

Active debris removal

With his specialization in , legal expert Zhuang Tian is following these developments closely. He will shortly be defending his Ph.D. thesis on the legal aspects of disposal. The specific focus of his research is how companies like ClearSpace and the Japanese company Astroscale are planning on actively removing debris, because there is another option: space equipment that removes itself after use by burning into the atmosphere.

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Boeing's beleaguered space capsule is heading back to Earth without two NASA astronauts
This photo provided by NASA shows Boeing's Starliner spacecraft which launched astronauts Butch Wilmore and Suni Williams to the International Space Station docked to the Harmony module's forward port on July 3, 2024, seen from a window on the SpaceX Dragon Endeavour spacecraft docked to the adjacent port. Credit: NASA via AP

After months of turmoil over its safety, Boeing's new astronaut capsule is set to depart the International Space Station on Friday without its crew.

Friday, 06 September 2024 16:39

Video: Mars rover trials

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Video: Mars rover trials
Codi overcoming a slope in rocky terrain. Credit: Airbus

Rover trials in a quarry in the U.K. showing a four-wheeled rover, known as Codi, using its robotic arm and a powerful computer vision system to pick up sample tubes.

The rover drives to the samples with an accuracy of 10 cm, constantly mapping the terrain. Codi uses its arm and four cameras to locate the sample tube, retrieve it and safely store it on the rover—all of it without .

At every stop, the rover uses stereo cameras to build up a 180-degree map of the surroundings and plan its next maneuvers. Once parked, the camera on top of the mast detects the tube and estimates its position with respect to the rover. The initiates a complex choreography to move closer to the sample, fetch it and store it.

The sample tubes are a replica of the hermetically sealed samples inside which NASA's Perseverance rover is collecting precious Martian soil inside. To most people on Earth, they resemble lightsabers.

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Two astronauts are left behind in space as Boeing's troubled capsule returns to Earth empty
The empty Boeing Starliner capsule sits at White Sands Missile Range in New Mexico, late Friday, Sept. 6, 2024, after undocking from the International Space Station. Credit: Boeing via AP

Boeing's first astronaut mission ended Friday night with an empty capsule landing and two test pilots still in space, left behind until next year because NASA judged their return too risky.

Six hours after departing the International Space Station, Starliner parachuted into New Mexico's White Sands Missile Range, descending on autopilot through the desert darkness.

It was an uneventful close to a drama that began with the June launch of Boeing's long-delayed crew debut and quickly escalated into a dragged-out cliffhanger of a mission stricken by failures and helium leaks.

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Two NASA astronauts stuck in space have flown long missions before
NASA astronauts Suni Williams, left, and Butch Wilmore stand together for a photo enroute to the launch pad at Space Launch Complex 41 Wednesday, June 5, 2024, in Cape Canaveral, Fla., for their liftoff on the Boeing Starliner capsule to the international space station. Credit: AP Photo/Chris O'Meara, File

The two NASA astronauts left behind at the International Space Station following the return of Boeing's troubled capsule are Navy test pilots who have ridden out long missions before.

Astronauts Butch Wilmore and Suni Williams are now full-time station crew members along with the seven others on board.

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An artist's illustrtaion of the Cluster satellite mission to study Earth's magentic field
An artist's illustrtaion of the Cluster satellite mission to study Earth's magentic field.

After 24 years diligently studying Earth's magnetic field, a satellite will mostly burn up over the Pacific Ocean on Sunday during a "targeted" re-entry into the atmosphere, in a first for the European Space Agency as it seeks to reduce space debris.

Since launching in 2000, the Salsa satellite has helped shed light on the magnetosphere, the powerful magnetic shield that protects Earth from solar winds—and without which the planet would be uninhabitable.

According to the ESA, Salsa's return home will mark the first-ever "targeted" re-entry for a satellite, which means it will fall back to Earth at a specific time and place but will not be controlled as it re-enters the atmosphere.

Teams on the ground have already performed a series of maneuvers with the 550-kilogram (1,200-pound) satellite to ensure it burns up over a remote and uninhabited region of the South Pacific, off the coast of Chile.

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astronauts
Credit: Pixabay/CC0 Public Domain

Space is an unnatural environment for humans. We can't survive unprotected in a pure vacuum for more than two minutes. Getting to space involves being strapped to a barely contained chemical explosion.

Since 1961, fewer than 700 people have been into space. Private space companies such as SpaceX and Blue Origin hope to boost that number to many thousands, and SpaceX is already taking bookings for flights to Earth orbit.

I'm an astronomer who has written extensively about space travel, including a book about our future off-Earth. I think a lot about the risks and rewards of exploring space.

As the commercial space industry takes off, there will be accidents and people will die. Polaris Dawn, planned to launch early in September 2024, will be a high-risk mission using only civilian astronauts. So, now is a good time to assess the risks and rewards of leaving the Earth.

Space travel is dangerous

Most Americans vividly recall the disasters that led to the loss of 14 astronauts' lives. Two of the five space shuttles disintegrated, Challenger in 1986 soon after launch and Columbia in 2003 on reentry.

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Washington (AFP) Sept 7, 2024
Boeing's beleaguered Starliner made its long-awaited return to Earth on Saturday without the astronauts who rode it up to the International Space Station, after NASA ruled the trip back too risky. After years of delays, Starliner launched in June for what was meant to be a roughly weeklong test mission - a final shakedown before it could be certified to rotate crew to and from the orbital l
Friday, 06 September 2024 12:10

Week in images: 02-06 September 2024

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Lensed Question Mark Galaxy (NIRCam)

Week in images: 02-06 September 2024

Discover our week through the lens

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Berlin, Germany (SPX) Sep 06, 2024
A research team led by Lund University in Sweden has identified an exoplanet exhibiting peculiar orbital movement, challenging current understandings of planetary system dynamics. This newly discovered planet, TOI-1408c, located 455 light-years away, appears to be involved in complex interactions with its larger neighbor, TOI-1408b, a hot gas giant. TOI-1408c, with a mass approximately eig
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