SCIENCE

The study, posted on the preprint server Research Square and not peer-reviewed yet, showed that the similarity of parts of the new viruses' genetic code with SARS-CoV-2 reinforces claims that Covid-19 has a natural origin. At the same time, their discovery means there are numerous coronaviruses with the potential to infect people, Nature reported.

In the disorder, a person's immune system attacks the nerves, causing muscle weakness and occasionally, paralysis. The condition is triggered by an acute bacterial or viral infection and can last for weeks or several years. Since the beginning of the pandemic, doctors have reported over 90 GBS cases following a possible Covid-19 infection.

Star formation is one of the key ways that galaxies grow, and they're said to have gone quiescent when they cease forming stars. Using NASA's Hubble Space Telescope and the Atacama Large Millimeter/submillimeter Array (ALMA) in northern Chile, the team from the University of Massachusetts, Amherst detected six such massive galaxies that were dead.

Of the two units, the Exploration Systems Development Mission Directorate (ESDMD) will develop systems for exploring the Moon and Mars, and the Space Operations Mission Directorate (SOMD) will focus on space operations. NASA is making the changes because of increasing space operations in low-Earth orbit and development programmes well underway for deep space exploration.

Equinox comes from the Latin words equi, which means "equal" and nox, which means "night". The astronomical event is caused by Earth's tilt on its axis and its motion in orbit around the Sun. On Wednesday, the Sun will be exactly above Earth's equator, moving from north to south, making day and night nearly equal in length -- about 12 hours -- throughout the world, said US space agency NASA in a blogpost.

The Artemis rover -- Volatiles Investigating Polar Exploration Rover (VIPER) -- during its 100-day journey will explore the region's surface and subsurface for water and other resources, the US space agency has confirmed.

While Mars has no liquid water on its surface today, remote sensing studies and analyses of Martian meteorites dating back to the 1980s posit that Mars was once water-rich, compared to Earth

According to cosmologists, the type of dark energy might have existed in the first 3,00,000 years after the Big Bang, Nature reported. A tentative first trace of this 'early dark energy' was detected in data collected between 2013 and 2016 by the Atacama Cosmology Telescope (ACT) in Chile, revealing two separate studies -- posted on the arXiv preprint server, meaning not yet peer-reviewed.

The mini-helicopter flew to the red planet on February 18 while being attached to the belly of NASA's Perseverance rover.

The findings, posted on the virological.org discussion forum and not yet peer reviewed, may challenge the hypothesis that SARS-COV-2 escaped from a laboratory, Nature reported. The finding could be the "dagger into the heart" of the hypothesis that SARS-CoV-2 escaped from a lab, rather than originating from the wildlife trade, Robert Garry, a virologist at Tulane University in Louisiana.