Active Volcanoes on Venus?

Guest geology by David Middleton Recent analyses of data collected by ESA’s Venus Express spacecraft indicates that some of the lava flows on Venus might be very young… RESEARCH ARTICLE PLANETARY SCIENCEPresent-day volcanism on Venus as evidenced from weathering rates of olivine Justin Filiberto1,*, David Trang2, Allan H. Treiman1 and Martha S. Gilmore3 Abstract At least some of Venus’…

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Morocco’s Anti-Atlas Mountains

Dec. 26, 2019 The Anti-Atlas Mountains of Morocco formed as a result of the collision of the African and Eurasian tectonic plates about 80 million years ago. This collision destroyed the Tethys Ocean. The limestone, sandstone, claystone and gypsum layers that formed the ocean bed were folded and crumpled to create the Anti-Atlas Mountains. In…

Stellar Snowflake Cluster

From NASA Dec. 23, 2019 Newborn stars, hidden behind thick dust, are revealed in this image of a section of the so-called Christmas Tree Cluster from NASA’s Spitzer Space Telescope. The newly revealed infant stars appear as pink and red specks toward the center and appear to have formed in regularly spaced intervals along linear…

New clues on dark matter from the darkest galaxies

A study by SISSA provides important information on its composition and on its interaction with luminous matter Scuola Internazionale Superiore di Studi Avanzati They are called low-surface-brightness galaxies and it is thanks to them that important confirmations and new information have been obtained on one of the largest mysteries of the cosmos: dark matter. “We…

NASA’s SDO Sees New Kind of Magnetic Explosion on Sun

from NASA Dec. 17, 2019 NASA’s Solar Dynamics Observatory has observed a magnetic explosion the likes of which have never been seen before. In the scorching upper reaches of the Sun’s atmosphere, a prominence — a large loop of material launched by an eruption on the solar surface — started falling back to the surface…

Stars Are Being Born in the Depths of a Black Hole

From NASA Stars Are Being Born in the Depths of a Black Hole Located about 5.8 billion light years from Earth in the Phoenix Constellation, astronomers have confirmed the first example of a galaxy cluster where large numbers of stars are being born at its core. Galaxy clusters are the largest structures in the cosmos…

Earth’s ‘Paunch’ Helps Sharpen Ice-Loss Estimates

From NASA Global Climate Change Feature | November 12, 2019 Image of Earth from the GOES-14 satellite. Credit: NASA-Goddard Space Flight Center, data from NOAA GOES By Pat Brennan, NASA’s Sea Level Change Portal Planet Earth is losing the battle of the bulge. Rotation makes it slightly fatter in the middle and flatter at the…

Hubble Spots a Curious Spiral

From NASA Nov. 15, 2019 Hubble Spots a Curious Spiral The universe is simply so vast that it can be difficult to maintain a sense of scale. Many galaxies we see through telescopes such as the NASA/ESA Hubble Space Telescope, the source of this beautiful image, look relatively similar: spiraling arms, a glowing center, and…