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Return of the LIDAR
Image: A laser shoots into the sky to study the Antarctic atmosphere at Concordia research station
Surprisingly Young Galaxy Breaks Low-Oxygen Record
Astronomers using two Maunakea Observatories -- Subaru Telescope and W. M. Keck Observatory -- combined with the power of machine learning, have discovered a nearby galaxy that has broken the record for having the lowest level of oxygen ever seen....
Early Mars Was Covered In Ice Sheets, Not Flowing Rivers
A large number of the valley networks scarring Mars's surface were carved by water melting beneath glacial ice, not by free-flowing rivers as previously thought, according to new UBC research published today in Nature Geoscience....
Prebiotic Precursors Of The Primordial RNA World In Space: Detection Of NH2OH
One of the proposed scenarios for the origin of life is the primordial RNA world, which considers that RNA molecules were likely responsible for the storage of genetic information and the catalysis of biochemical reactions in primitive cells, before the...
Predicting frequency changes of global-scale solar Rossby modes due to solar cycle changes in internal rotation
Authors: C. R. Goddard, A. C. Birch, D. Fournier and L. Gizon.
Astronomy & Astrophysics Vol. 640 , page L10
Published online: 04/08/2020
Keywords: Sun: rotation ; waves ; Sun: oscillations ; Sun: interior ; Sun: activity ; hydrodynamics.
Demonstration of a wideband submillimeter-wave low-noise receiver with 4–21 GHz IF output digitized by a high-speed 32 GSps ADC
Authors: T. Kojima, H. Kiuchi, K. Uemizu, Y. Uzawa, M. Kroug, A. Gonzalez, T. Dippon and T. Kageura.
Astronomy & Astrophysics Vol. 640 , page L9
Published online: 04/08/2020
Keywords: instrumentation: detectors ; techniques: spectroscopic.
Ancient valleys on Mars may have been carved by glaciers
Some areas on Mars are covered in huge valleys that many think were carved by rivers in the planet's warmer past, but they may have actually been formed by glaciers, pointing to a chilly early Mars
VLT Measures Main-Belt Asteroid Euphrosyne and Its Moon
Using the high-angular resolution observations from ESO’s Very Large Telescope (VLT), astronomers have determined the 3D shape, diameter and density of the asteroid (31) Euphrosyne and the diameter of its moon. Euphrosyne, one of the biggest objects in the Solar Systrem’s main asteroid belt, was discovered by James Ferguson on September 1, 1854, the first [...]
CryoSat taken to new heights for ice science
Ice plays a critical role in keeping Earth’s climate cool, but our rapidly warming world is taking its toll and ice is in general decline. For more than 10 years, ESA’s CryoSat has been returning critical information on how the height of our fragile ice fields is changing. Nevertheless, to gain even better insight, ESA has spent the last two weeks nudging CryoSat into a higher orbit to synchronise it with NASA’s ICESat-2 so that scientists can benefit from simultaneous measurements from different space sensors.
SpaceX Crew Dragon capsule makes splashdown with NASA astronauts
The first astronauts to launch to the International Space Station on a commercial spacecraft have now returned, splashing down into the sea off the coast of Florida