Research sheds light on using multiple CubeSats for in-space servicing and repair missions

As more satellites, telescopes, and other spacecraft are built to be repairable, it will take reliable trajectories for service spacecraft to reach them safely. Researchers in the Department of Aerospace Engineering in The Grainger College of Engineering, University of Illinois Urbana-Champaign are developing a methodology that will allow multiple CubeSats to act as servicing agents to assemble or repair a space telescope.

Asteroid Ryugu samples suggest presence of salty water in outer solar system

Asteroids that orbit close to the Earth inevitably cause us some anxiety due to the even remote possibility of a collision. But their proximity also offers ample opportunities to learn more about the universe. Ryugu, a 900-meter diameter asteroid in the Apollo belt, has recently proven useful in our search for signs of life’s precursors elsewhere in our solar system.

New England’s salt marshes store 10 million cars’ worth of carbon—and add another 15,000 cars’ worth every year

In the race to combat global climate change, much attention has been given to natural carbon sinks: those primarily terrestrial areas of the globe that absorb and sequester more carbon than they release. While scientists have long known that coastal salt marshes are just such a sink for “blue carbon,” or carbon stored in the ocean and coastal ecosystems, it has been difficult to get an accurate estimate of just how much they store, and so most of the focus has been on terrestrial sinks such as forests and grasslands.

‘Water tweezers’: New technique generates topological structures with gravity water waves

A team of physicists at Fudan University, working with colleagues from Henan University, both in China, and from Nanyang Technological University, in Singapore and Donostia International Physics Center, in Spain, has developed a way to generate topological structures in surface water using gravity water waves. In their study published in Nature, the group used their technique to generate structures such as wave vortices, skyrmions and Möbius strips.

Interstellar visitors: Material from Alpha Centauri may already be here

The appearance of the interstellar objects (ISOs) ‘Oumuamua and Comet Borisov in 2017 and 2019, respectively, created a surge of interest. What were they? Where did they come from? Unfortunately, they didn’t stick around and wouldn’t cooperate with our efforts to study them in detail. Regardless, they showed us something: Milky Way objects are moving around the galaxy.

A jumping robot could leap over Enceladus’ geysers

Locomotion makes things move, and certain forms of locomotion make them move better than others. Those more effective types of locomotion change depending on the environment, which is even more true for space exploration. Methods that might work well on Earth or even other planets, such as helicopters, might be utterly useless on others. But specialized forms of locomotion abound, and the NASA Institute of Advanced Concepts (NIAC) phase I grants for this year include a closer look at one such specialized form—jumping.

Gas motion in the Centaurus galaxy cluster challenges star formation assumptions

Kokoro Hosogi, a physics student at The University of Alabama in Huntsville (UAH), has achieved a rare honor for an undergraduate: her contributions are being recognized in a study published in the journal Nature. The researcher recently supported the X-Ray Imaging and Spectroscopy Mission (XRISM) studying celestial X-ray objects to help illuminate why gas at the core of the Centaurus galaxy cluster approximately 170 million light years away is not generating young new stars as rapidly as predicted, a discovery with important implications on the evolution of galaxy clusters.