Earth has had at least 5 major ice ages. Now it appears Mars – the next planet outward from the sun – has undergone anywhere from half a dozen to 20 ice ages in the past several hundred million years. Source: https://earthsky.org/space/new-evidence-for-multiple-ice-ages-on-mars…
Tag: iceland
Rocks show Mars once felt like Iceland
Once upon a time, seasons in Gale Crater probably felt something like those in Iceland. But nobody was there to bundle up more than 3 billion years ago. Source: https://phys.org/news/2021-01-mars-felt-iceland.html…
The myths behind the southern and northern lights
For millennia, humans have viewed the northern and southern lights – aurora borealis and aurora australis – and created myths and folklore to explain the dancing lights they saw in the sky. Source: https://earthsky.org/human-world/legends-folklore-myths-northern-southern-lights-auroras…
Identical Twins Are Not So Identical, Study Suggests
An anonymous reader quotes a report from The Guardian: Genetic differences between identical twins can begin very early in embryonic development, according to a study that researchers say has implications for examining the effects of nature versus nurture. Identical — or monozygotic — twins come from a single fertilized egg that splits in two. They are important research subjects because they…
A Phoenix Aurora over Iceland
All of the other aurora watchers had gone home. Source: https://apod.nasa.gov/apod/astropix.html…
Using AI to count and map craters on the moon
A team of researchers affiliated with several institutions in China, one from Italy and one from Iceland has used a machine-learning artificial intelligence application to count and note the location of over 100,000 craters on the moon. In their paper published in the journal Nature Communications, the group describes programming their system to recognize craters by training it with data collected…
Tasmania Is Now 100% Powered By Renewable Electricity
Tasmania consists of the 26th-largest island in the world and its surrounding 334 islands — an island state of Australia with a population around 540,000 people, according to Wikipedia. Friday the Tasmanian government “declared that it has become the first Australian state, and one of just a handful of jurisdictions worldwide, to be powered entirely by renewable electricity,” according to one…
Is Mars still volcanically active?
A new study of geologically young lava flows in Elysium Planitia suggests that Mars might still have residual volcanic activity below its surface. The finding could also correlate with seismic activity detected by the InSight lander in the same region and may have implications for possible martian life. Source: https://earthsky.org/space/mars-cerberus-fossae-young-lava-flows-volcanic-activity…
Is Iceland’s most active volcano about to erupt?
The ice-covered Grímsvötn volcano produced an unusually large and powerful eruption in 2011. Now, says this volcanologist, there are clear signs that Grímsvötn is getting ready to erupt again. Source: https://earthsky.org/earth/grimsvotn-iceland-volcano-about-to-erupt…
Large Antibody Study Offers Hope For Virus Vaccine Efforts
Antibodies that people make to fight the new coronavirus last for at least four months after diagnosis and do not fade quickly as some earlier reports suggested, scientists have found. From a report: Tuesday’s report, from tests on more than 30,000 people in Iceland, is the most extensive work yet on the immune system’s response to the virus over time, and…