Astronomers used radio waves to study conditions in the vicinity of Proxima Centauri, the nearest star to our sun. The results suggest Proxima’s 2 known planets are likely bathed in intense radiation from this star, casting doubt on the planets’ potential for life. Source: https://earthsky.org/space/proxima-centauri-space-weather-planets-uninhabitable…
Tag: clouds
How nearby galaxies form their stars
Stars are born in dense clouds of molecular hydrogen gas that permeates interstellar space of most galaxies. While the physics of star formation is complex, recent years have seen substantial progress towards understanding how stars form in a galactic environment. What ultimately determines the level of star formation in galaxies, however, remains an open question. Source: https://phys.org/news/2020-12-nearby-galaxies-stars.html…
Capella Space Defends High-Resolution Satellite Photos Described as ‘Eerily Observant’
“A new satellite from Capella Space was described as “pretty creepy” by Bustle’s technology site Input: Like other hunks of metal currently orbiting Earth, the Capella-2 satellite’s onboard radar system makes it capable of producing ludicrously high-resolution visuals from its data. More unconventional is the service Capella has launched to match: the government or private customers can, at any time, request…
The Large Magellanic Cloud, our galactic neighbor
The Large Magellanic Cloud is a petite galaxy visible with the unaided eye – all year round – for those in the Southern Hemisphere. This small neighboring galaxy to the Milky Way is somewhere between spiral and irregular in shape. Source: https://earthsky.org/clusters-nebulae-galaxies/the-large-magellanic-cloud…
C1-23152: An ancient galaxy that built itself
A popular theory of galaxy formation suggests that small galaxies merged to form larger ones. But galaxy C1-23152 – 12 billion light-years from Earth – apparently formed itself from gas in the early universe, via exceedingly rapid star formation. Source: https://earthsky.org/space/c1-23152-galaxy-built-itself-not-via-galaxy-merger…
Favorite photos of 2020’s Geminid meteor shower
EarthSky community members from around the world share their photos and experiences of this year’s Geminid meteor shower, here. Source: https://earthsky.org/todays-image/favorite-photos-of-2020s-geminid-meteor-shower…
Is that a UFO?! There’s probably an explanation
Most Unidentified Flying Objects aren’t actually unidentified. Here’s a list of phenomena, either natural or human-made, that people often mistake for UFOs. Source: https://earthsky.org/space/if-its-not-a-ufo-what-is-it…
Favorite photos of crescent moon and Venus
A few of our favorite images of the waning crescent moon and dazzling planet Venus in the early-morning sky. Source: https://earthsky.org/todays-image/dec-2020-crescent-moon-venus-photos…
For 3rd data release, Gaia gazed toward galactic anticenter
The 3rd data release from the Gaia mission will provide astronomers with a “treasure trove” of information they didn’t have before. As they analyze Gaia’s data in the years ahead, we’re sure to learn new and surprising things about our home galaxy, the Milky Way. Source: https://earthsky.org/space/gaia-3rd-data-release-edr3-dec-2020…
Carbon emission from star-forming clouds
The carbon atom can be easily ionized, more easily than hydrogen atoms for example. In star forming regions, where massive young stars emit ultraviolet light capable of ionizing atoms, all the neutral carbon nearby becomes ionized. The singly-ionized carbon atom (abbreviated CII) emits a strong line in the far infrared that is both very intense and consequently a reliable proxy for…