Tag: eruptions

What’s the coldest Earth has ever been?

Our planet’s history includes episodes of cold so extreme that glaciers reached sea level in equatorial regions. Source: https://earthsky.org/earth/whats-coldest-earth-has-ever-been…

Mount Etna erupts

Italy’s Mount Etna, one of the world’s most active volcanoes, has erupted twice in less than 48 hours, spewing a fountain of lava and ash into the sky. Source: https://earthsky.org/todays-image/mount-etna-erupts-feb2021…

Astronomers unmask cosmic eruptions in nearby galaxies

A brief burst of high-energy light swept through the solar system on April 15, triggering many space-based instruments, including those aboard NASA and European missions. Now, multiple international science teams conclude that the blast came from a supermagnetized stellar remnant known as a magnetar located in a neighboring galaxy. Source: https://phys.org/news/2021-01-astronomers-unmask-cosmic-eruptions-nearby.html…

Is a solar flare the same thing as a CME?

Solar Cycle 25 is here, and that means – in the years ahead – more solar flares and more coronal mass ejections, or CMEs. People sometimes use the words interchangeably, but they’re not the same thing. Here’s the difference. Source: https://earthsky.org/space/is-a-solar-flare-the-same-thing-as-a-cme…

Images reveal where lava broke through the wall of a Martian crater and began filling it up

At a fundamental level, Mars is a volcanic planet. Its surface is home to the solar system’s largest extinct volcano, Olympus Mons, and another trio of well-known volcanoes at Tharsis Montes. And those are just the highlights: there are many other volcanoes on the surface. Though that volcanic activity ceased long ago, the planet’s surface tells the tale of a world…

What are coronal mass ejections?

Coronal mass ejections – CMEs for short – are powerful eruptions near the surface of the sun that can ripple through our solar system and can interrupt satellites and power grids on Earth. Source: https://earthsky.org/space/what-are-coronal-mass-ejections…

Voyager Probes Detect New Kind of ‘Electron Burst’ in Interstellar Space

“NASA’s twin Voyager probes keep making discoveries in interstellar space,” reports Space.com The Voyager mission has detected a new type of “electron burst,” which will provide insights into the mechanisms of flaring stars, a new study reports. The bursts occur when cosmic ray electrons — fast-moving particles from far beyond the solar system — are pushed by shock waves generated by…

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…

Are There Active Volcanoes on Mars?

Mars is a dead planet — “Or is it?” asks the New York Times:
Previous research has hinted at volcanic eruptions on Mars 2.5 million years ago. But a new paper suggests an eruption occurred as recently as 53,000 years ago in a region called Cerberus Fossae, which would be the youngest known volcanic eruption on Mars. That drives home the prospect…