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Gamma Rays from UltraCompact Minihaloes: Effects on the Earth's Atmosphere and Links to Mass Extinction Events
Recent studies of the effects on the Earth's atmosphere by astrophysical sources, such as nearby gamma-ray bursts or supernovae, have shown that these events could lead to severe changes in atmospheric composition....
LOUPE: Observing Earth From The Moon To Prepare For Detecting life On Earth-like Exoplanets
LOUPE, the Lunar Observatory for Unresolved Polarimetry of the Earth, is a small, robust spectro-polarimeter with a mission to observe the Earth as an exoplanet. Detecting Earth-like planets in stellar habitable zones is one of the key challenges of modern...
Asteroid Impact, Schumann Resonances And The End Of The Dinosaurs
We estimate the expected magnitudes of the Schumann resonance fields immediately after the Chicxulub impact and show that they exceed their present-day values by about 5×104 times....
Exoplanets Sciences With Nulling Interferometers And A Single-Mode Fiber-Fed Spectrograph
Understanding the atmospheres of exoplanets is a milestone to decipher their formation history and potential habitability. High-contrast imaging and spectroscopy of exoplanets is the major pathway towards the goal. Directly imaging of an exoplanet requires high spatial resolution....
ALMA Deep Field in SSA22
Authors: Hideki Umehata, Ian Smail, A. M. Swinbank, Kotaro Kohno, Yoichi Tamura, Tao Wang, Yiping Ao, Bunyo Hatsukade, Mariko Kubo, Kouchiro Nakanishi and Natsuki N. Hayatsu.
Astronomy & Astrophysics Vol. 640 , page L8
Published online: 03/08/2020
Keywords:
submillimeter: galaxies ; galaxies: starburst ; galaxies: high-redshift ; submillimeter: ISM ; galaxies: evolution.
Pebbles versus planetesimals
Authors: N. Brügger, R. Burn, G. A. L. Coleman, Y. Alibert and W. Benz.
Astronomy & Astrophysics Vol. 640 , page A21
Published online: 03/08/2020
Keywords:
planet–disk interactions ; planets and satellites: formation ; planets and satellites: physical evolution ; planets and satellites: gaseous planets ; planets and satellites: terrestrial planets.
NASA 'Dads' Make Successful SpaceX Splashdown
The NASA astronauts who flew on the SpaceX craft to the International Space Station in May returned to Earth on Sunday. They splashed down in the Gulf of Mexico due to bad weather in the Atlantic.
Splashdown! SpaceX And NASA Astronauts Make History
NASA and SpaceX are welcoming home two astronauts who splashed down safely in the Gulf of Mexico after several months on the International Space Station.
Astronauts Set To Return To Earth In First U.S. Splashdown In Decades
The two NASA astronauts who flew on the SpaceX craft to the International Space Station in May are scheduled to return to Earth on Sunday. But there's a hurricane forecast for the splashdown vicinity.
55-Million-Year-Old Fossil of Large-Sized Owl Found in Wyoming
A new genus and species of owl that lived 55 million years ago (Eocene epoch) has been identified from a partial skeleton found in Wyoming, the United States. The discovery is reported in a paper in the Journal of Vertebrate Paleontology. Named Primoptynx poliotauros, the ancient owl species was about 60 cm (23.6 inches) tall. [...]