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…
Tag: continents
Water worlds may be abundant in our galaxy
A new study suggests that our Milky Way galaxy is filled with planets like Earth, containing continents and oceans. If so, life might be common in the Mlilky Way. Source: https://earthsky.org/space/water-common-on-planets-pebble-accretion-milky-way…
Astrophysicists design ‘radically different’ world map
You know the old problem of how to portray the round globe of Earth on a flat map? Now a trio of map experts has worked together to solve this problem. Their new map is 2-sided and round. Source: https://earthsky.org/earth/astrophysicists-new-design-world-map…
The Milky Way may be swarming with planets with oceans and continents like here on Earth
Astronomers have long been looking into the vast universe in hopes of discovering alien civilisations. But for a planet to have life, liquid water must be present. The likelihood of that scenario has seemed impossible to calculate because it has been the assumption that planets like Earth got their water by chance when a large ice asteroid hit the planet. Source:…
What is plate tectonics?
Blame plate tectonics for Earth’s mountains, earthquakes, volcanoes, and why its continents fit together like pieces of a giant jigsaw puzzle. Source: https://www.livescience.com/37706-what-is-plate-tectonics.html
Substance Found In Antarctic Ice May Solve a Martian Mystery
sciencehabit shares a report from Science Magazine: Researchers have discovered a common martian mineral deep within an ice core from Antarctica. The find suggests the mineral — a brittle, yellow-brown substance known as jarosite — was forged the same way on both Earth and Mars: from dust trapped within ancient ice deposits. It also reveals how important these glaciers were on…
Facing Overwhelming Demand, Non-Profit ‘RPG Research’ Looks for Help
Software developer/sys-admin Hawke Robinson is the CEO of RPG Research, a 501(c)3 non-profit, volunteer-run, charitable organization founded in 1977. He’s also long-time Slashdot reader kmleon, and shares this story from the gaming-news site The Gamer: RPG Research recently sent out an urgent call requesting more volunteers, more warehouse space, and more donations to help meet the overwhelming demand it is currently…
Wildfire Smoke Is Loaded With Microbes. Is That Dangerous?
An anonymous reader quotes a report from Wired: If you’re unfortunate enough to breathe wildfire smoke, you’re getting a lungful of charred plant material, noxious gases, and — if the fire tore through human structures — incinerated synthetic materials. All across the board, it’s bad stuff, proven to be a severe detriment to human health, particularly for those with respiratory conditions…
Earth spent 500 million years creating and eating dead continents
For more than a billion years, Earth covered itself in new continents. New research shows that those continents were quickly swallowed up again but their deaths fertilized life on the surface. Source: https://www.livescience.com/earth-lost-continents.html
Did the Wow! signal come from this star?
Where did the famous mystery Wow! signal, detected in 1977, come from? Astronomer Alberto Caballero might have pinpointed the host star. It’s a sunlike star 1,800 light-years away, in the direction to the center of our Milky Way. Source: https://earthsky.org/space/source-of-wow-signal-in-1977-sunlike-star-2mass-19281982-2640123…