On February 9, 1913, lucky observers witnessed the Great Meteor Procession, when bright meteors soared horizontally across the sky in a stately marching rank for minutes at a time. Source: https://earthsky.org/space/this-date-in-science-great-meteor-procession-of-february-9-1913…
Tag: map
How to see Sirius B
Sirius is a binary star, with a small white dwarf called the Pup orbiting the large primary star. It’s not easy to observe, but it is possible. Here’s how. Source: https://earthsky.org/brightest-stars/how-to-observe-sirius-b…
Robots Are Speeding Up the Most Boring Job In Astronomy
sciencehabit writes: The Sloan Digital Sky Survey (SDSS) has, for more than 20 years, pioneered collecting spectra from millions of astronomical objects, from nearby stars to supermassive black holes. But this year, the survey is making a change: Instead of employing a small team of technicians for the daily chore of plugging optical fibers into preprepared plates so that — when…
A robot submarine could explore Titan’s deepest sea
A new study of data from NASA’s bountiful Cassini mission shows that Titan’s largest methane sea, Kraken Mare, is at least 1,000 feet – 300 meters – deep near its center. That’s plenty of room for a future robotic submarine to explore. Source: https://earthsky.org/space/titans-largest-sea-kraken-mare-is-1000-feet-deep…
New evidence for multiple ice ages on Mars
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…
Our world is losing ice at a record rate
The rate at which ice is disappearing across the planet has been speeding up, with 65% since the 1990s, a survey of global ice loss using European Space Agency satellite data reveals. Source: https://earthsky.org/earth/esa-satellites-show-record-rate-ice-loss…
Striped brown dwarf looks a lot like Jupiter
The surface features of brown dwarfs – objects midway in mass between planets and stars – can’t be seen. But researchers have found a way to reveal Jupiter-like stripes and bands in the atmosphere of the closest brown dwarf, Luhman 16B. Source: https://earthsky.org/space/brown-dwarf-luhman-16b-jupiter-like-stripes…
2020 tied for warmest year on record
2020 was Earth’s hottest year in the 140-year record, effectively tying 2016, the previous record-holder. Source: https://earthsky.org/earth/2020-tied-for-warmest-global-year-on-record…
Citizen scientists contribute to 3-D map of cosmic neighborhood
Scientists tapped into the worldwide network of volunteers using Backyard Worlds: Planet 9 to map dozens of new brown dwarfs, or balls gas not heavy enough to be stars. Source: https://phys.org/news/2021-01-citizen-scientists-contribute-d-cosmic.html…