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Authors: J. Arancibia-Silva, J. Bouvier, A. Bayo, P. A. B. Galli, W. Brandner, H. Bouy and D. Barrado.
Astronomy & Astrophysics Vol. 640 , page C2
Published online: 07/08/2020
Keywords: stars: low-mass ; stars: pre-main sequence ; stars: abundances ; open clusters and associations: individual: Psc-Eri ; stars: rotation ; errata, addenda.

Taking advantage of a total lunar eclipse in January 2019, astronomers using the NASA/ESA Hubble Space Telescope have measured the amount of ozone in the atmosphere of our planet. This method serves as a proxy for how they will observe Earth-like exoplanets transiting in front of their host stars in search of extraterrestrial life. Hubble [...]

The tenuous outermost layer of the sun, called the corona, is invisible most of the time, but its magnetic fields have been mapped for the first time

Video: 00:04:35 Join ESA astronauts Thomas Pesquet and Matthias Maurer at NASA’s Johnson Space Center in Houston, Texas, USA. In part four of this video series, the astronauts discuss taking photos on the International Space Station.Though mission details and dates are yet to be confirmed, Thomas and Matthias are the next two European astronauts in line for flights. Thomas has flown to the International Space Station before, while Matthias will fly for the first time.Prior to a mission, astronauts train extensively to ensure they are familiar with the vast array of systems and operations on board. In this video, the pair reflect on the images Thomas took during his first mission and how he plans to approach space photography the second time around.This video was filmed in June 2020. At that time, the platform Thomas and Matthias were standing on – in front of a full-scale mock-up of the International Space Station – was the only place at NASA’s JSC that they could interact without face masks. Despite this, the pair were required to maintain social distance at all times as a precaution. 

The heliosphere is a giant magnetic bubble that contains our Solar System, the solar wind and the solar magnetic field. Outside the heliosphere is the interstellar medium — the ionized gas and magnetic field that fills the space between stellar systems in our Milky Way Galaxy. The shape of the heliosphere has been explored in [...]

Millions of people around the world face hunger every day, and unfortunately, the COVID-19 pandemic is expected to make the issue of food security even worse. Satellites are helping to alleviate the situation by providing crucial information to monitor crop growth and harvesting from space.

Using data from NASA's InSight Lander on Mars, Rice University seismologists have made the first direct measurements of three subsurface boundaries from the crust to the core of the red planet....

Astronomers using several telescopes at NOIRLab, including the Southern Astrophysical Research (SOAR) Telescope, have obtained critical data on a particular type of exploding star that produces copious amounts of calcium....

In SETI, when searching for "beacons" -- transmissions intended for us and meant to get our attention -- one must guess the appropriate frequency to search by considering what frequencies would be universally obvious to other species....

The key goals of the astrobiology community are to identify environments beyond Earth that may be habitable, and to search for signs of life in those environments. A fundamental aspect of understanding the limits of habitable environments and detectable signatures...