Study

A single bright star in the constellation of v Indus, visible from the southern hemisphere, has revealed new insights on an ancient collision that our galaxy, the Milky Way, underwent with another smaller galaxy called Gaia-Enceladus early in its history.  (Image: via   Troy Oakes Photography  )

TESS Dates an Ancient Collision With Our Galaxy

An international team of scientists led by the University of Birmingham adopted the novel approach of applying the forensic characterization of a single ancient, bright star called ν Indi as a probe of the history of the Milky Way.  Stars carry “fossilized…

NASA satellites have observed the Antarctic ozone hole since the late 1970s — before and after nations agreed to stop producing chemicals that destroy the ozone layer. Instrument: Aura — OMI. (Image: NASA)

Iodine May Slow Ozone Layer Recovery

A new paper quantifying small levels of iodine in Earth’s stratosphere could help explain why some of the planet’s protective ozone layer isn’t healing as fast as expected. The paper posits a set of connections that link air pollution near…

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TESS Dates an Ancient Collision With Our Galaxy

An international team of scientists led by the University of Birmingham adopted the novel approach of applying the forensic characterization of a single ancient, bright star called ν Indi as a probe…

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Iodine May Slow Ozone Layer Recovery

A new paper quantifying small levels of iodine in Earth’s stratosphere could help explain why some of the planet’s protective ozone layer isn’t healing as fast as expected. The paper…

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Scientists Find Evidence That Venus Has Active Volcanoes

New research led by Universities Space Research Association (USRA) and published in Science Advances shows that lava flows on Venus may be only a few years old, suggesting that Venus could be volcanically active today —…

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Gamma-Ray Laser Moves a Step Closer to Reality

A physicist at the University of California, Riverside, has performed calculations showing hollow spherical bubbles filled with a gas of positronium atoms are stable in liquid helium. The calculations take…