Universal-Sci

NASA’s First Planetary Defense Technology Demonstration to Collide with Asteroid in 2022

NASA’s First Planetary Defense Technology Demonstration to Collide with Asteroid in 2022

The Double Asteroid Redirection Test (DART) – NASA’s first mission to demonstrate a planetary defense technique – will get one chance to hit its target, the small moonlet in the binary asteroid system Didymos. The asteroid poses no threat to Earth and is an ideal test target: measuring the change in how the smaller asteroid orbits about the larger asteroid in a binary system is much easier than observing the change in a single asteroid's orbit around the Sun. Work is ramping up at the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland, and other locations across the country, as the mission heads toward its summer 2021 launch – and attempts to pull off a feat so far seen only in science fiction films. 

Why some doctors are prescribing a day in the park or a walk on the beach for good health

Why some doctors are prescribing a day in the park or a walk on the beach for good health

Taking a walk on a wooded path, spending an afternoon in a public park, harvesting your backyard garden and even looking at beautiful pictures of Hawaii can all make us feel good. Certainly, for many of us, it’s beneficial to have time outside in natural environments.

Don’t write off abandoned buildings – they can be an important resource for the community

Don’t write off abandoned buildings – they can be an important resource for the community

You need only look to the UK’s high streets to see myriad buildings in decline. Walk through any city or town and witness the empty shops, vacant office blocks and derelict housing. A recent report from the Royal Society for Public Health revealed that one in 10 high street shops in the UK is empty.

Starlink’s Satellites Will be Orbiting at a Much Lower Altitude, Reducing the Risks of Space Junk

Starlink’s Satellites Will be Orbiting at a Much Lower Altitude, Reducing the Risks of Space Junk

Among Elon Musk’s many plans for the future, one of the more ambitious has been the creation of a constellation of satellites that will offer broadband internet access to the entire world. Known as “Starlink”, the company’s long-term plan is to deploy over 12,000 internet satellites to Low Earth Orbit (LEO) by the mid-2020s.

Dark Matter Detector Finds the Rarest Event Ever Seen in the Universe

Dark Matter Detector Finds the Rarest Event Ever Seen in the Universe

Since the 1960s, scientists have theorized that the Universe is filled with a mysterious, invisible mass. Known as “dark matter“, this mass is estimated to make up roughly 85% of the matter in the Universe and a quarter of its energy density. While this mass has been indirectly observed and studied, all attempts at determining its true nature have so far failed.

Should we turn the Sahara Desert into a huge solar farm?

Should we turn the Sahara Desert into a huge solar farm?

Whenever I visit the Sahara I am struck by how sunny and hot it is and how clear the sky can be. Aside from a few oases there is little vegetation, and most of the world’s largest desert is covered with rocks, sand and sand dunes. The Saharan sun is powerful enough to provide Earth with significant solar energy.

Non-thermal plasma: new technology could kill 99.9% of the deadly germs in the air

Non-thermal plasma: new technology could kill 99.9% of the deadly germs in the air

You can live without food for three weeks and without water for up to three days. But you can’t live without air for more than three short minutes. It’s not just the abundance of air that matters – the quality is essential, too. Unfortunately, air can be contaminated with dangerous germs known as airborne pathogens, such as bacteria and viruses.