Gliese 12 b is an Earth-size planet orbiting in the temperate zone around a nearby, stable red dwarf star. It's a Rosetta Stone world that will tell us a lot about how many superficially earthlike planets actually have the right conditions for life.
The image by astronomer Jerome Yesavage shows a low surface brightness planetary nebula cataloged as PN Kohoutek 1-16, located in the direction of the Draco Constellation and located at a distance of about 3,400 light years from the Solar System. The central star is a very hot pulsating star called DS Dra, it has a magnitude of 14.96 and is of spectral type..... #astronomy#space#astrophysics#astrophotography
Non-thermal energy components evolving from z=4 to z=0 in the last of my #SimulatedUniverses
The combination of all these, for the case of relativistic electrons, gives the total synchrotron emission from the cosmic web, from galaxies to filaments.
If you are interested in the use of virtual spaces for online events, do check out this event next week!
Organised by the International Astronomical Union (IAU), this #astrophotography gallery is hosted in spatial: a 3D virtual space you can explore via a regular web browser or #VR Meta headset.
I love virtual spaces for feeling I've "gone somewhere", and the audio falloff means you can chat to people you meet... or run off and ignore their babble while you cruise the #astronomy art.
It's #WorldTurtleDay! In 1754 the English botanist and author John Hill proposed a new constellation he called "Testudo" (the Tortoise). It didn't catch on with astronomers, but under dark night skies it can still be seen. Read more about it: https://unchartedconstellations.com/
ESA's Euclid space telescope is designed to map dark matter and dark energy across the universe. But as it is getting started, Euclid is also sending back gorgeous cosmic snapshots.
This is the Owl Nebula from last night. It is about 2000 light years away and about 2 light years in diameter. It formed about 8000 years ago from gases ejected from a star.
Finally, after months of work, the #ESAEuclid Early Release Observation images, data, first science results, and #Euclid mission reference papers have been released. You can read more in our blog post, which has links to the papers, the press releases, and everything else:
In 45min (noon CEST today) #ESA and the @ec_euclid will release 5 more #ESAEuclid Early Release Observation images to the world. Accompanied by the first release of Euclid ERO science data, as well as 15 reference and science papers.
There’s a lot more junk floating around Earth than there used to be - by Tom Jones & David Crowther 5/17/24
"...Those stats may pickup in the coming years though, as the ESA tracks the ever-growing number of man-made objects that clutter the space around Earth. At the end of last year, a staggering 36,500 space debris objects over 10 cm in length were orbiting the Earth — perhaps little shock to anyone familiar with the Kessler Syndrome, a concerning theory that the more space junk there is, the more collisions there will be, causing a self-perpetuating chain reaction that could result in Earth’s orbit becoming essentially unusable..."
The summer 2024 NASA's Astrophoto Challenge is now open! This summer's target: Cassiopeia A.
Make your own images with real NASA data using a simple, online tool. Then, submit your image. Standout entries are featured on the website and get comments from expert judges.