Scientists have identified 37 volcanic structures on Venus that appear to be recently active — and probably still are today — painting the picture of a geologically dynamic planet and not a dormant world as long thought. NBC News reports: The research focused on ring-like structures called coronae, caused by an upwelling of hot rock from deep within the planet’s interior,…
Tag: Telltale
COVID-19 Vaccines With ‘Minor Side Effects’ Could Still Be Pretty Bad
“The risk of nasty side effects in the Moderna and Oxford trials should be made clear now, before it ends up as fodder for the skeptics,” argues Hilda Bastian, a former consumer health care advocate and a Ph.D. student at Bond University who studies evidence-based medicine. An anonymous reader shares an excerpt from her article via Wired: On Monday, vaccine researchers…
Astronomers Spot Potential First Evidence of New Planet Being Born
Astronomers believe they may have found the first direct evidence of a new planet being born. A dense disc of dust and gas has been spotted surrounding a young star called AB Aurigae, about 520 light years away from Earth. From a report: Using the European Southern Observatory’s Very Large Telescope (VLT), located in Chile, the researchers observed a spiral structure…
Very Large Telescope sees signs of planet birth
Observations made with the European Southern Observatory’s Very Large Telescope (ESO’s VLT) have revealed the telltale signs of a star system being born. Around the young star AB Aurigae lies a dense disc of dust and gas in which astronomers have spotted a prominent spiral structure with a ‘twist’ that marks the site where a planet may be forming. The observed…
Google’s Medical AI Was Super Accurate in a Lab. Real Life Was a Different Story.
The covid-19 pandemic is stretching hospital resources to the breaking point in many countries in the world. It is no surprise that many people hope AI could speed up patient screening and ease the strain on clinical staff. But a study from Google Health — the first to look at the impact of a deep-learning tool in real clinical settings –…
Earth May Have Been a ‘Water World’ 3 Billion Years Ago, Scientists Find
An anonymous reader quotes a report from The Guardian: Scientists have found evidence that Earth was covered by a global ocean that turned the planet into a “water world” more than 3 billion years ago. Telltale chemical signatures were spotted in an ancient chunk of ocean crust which point to a planet once devoid of continents, the largest landmasses on Earth….
What is dark matter?
Dark matter doesn’t emit light. It can’t be directly observed with any of the existing tools of astronomers. Yet astrophysicists believe it and dark energy make up most of the mass of the cosmos. What dark matter is, and what it isn’t. here. Source: https://earthsky.org/astronomy-essentials/definition-what-is-dark-matter…
Earth’s cousins: Upcoming missions to look for ‘biosignatures’ in exoplanet atmospheres
Scientists have discovered thousands of exoplanets, including dozens of terrestrial—or rocky—worlds in the habitable zones around their parent stars. A promising approach to search for signs of life on these worlds is to probe exoplanet atmospheres for “biosignatures”—quirks in chemical composition that are telltale signs of life. For example, thanks to photosynthesis, our atmosphere is nearly 21% oxygen, a much higher…
New clues in the search for the universe’s oldest galaxies
An astronomer reports on a very old galaxy cluster – labeled XLSSC 122 – whose light has taken 10.4 billion years to travel across the universe to us. Source: https://earthsky.org/space/new-clues-search-oldest-galaxies-in-the-universe…
After Two Years NASA Loses Contact With Its Briefcase-Sized, Exoplanet-Hunting Satellite
“NASA has a lot of high-tech hardware cruising around in space right now, but one of the space agency’s pint-sized exoplanet hunters appears to have gone dark,” reports BGR: In a post by NASA’s Jet Propulsion Laboratory, the group explains that its ASTERIA satellite has been failing to return attempts to contact it for about a month now. ASTERIA is a…