Create accountLogin

Recent searches

No recent searches

Search options

Only available when logged in.
ohai.social is one of the many independent Mastodon servers you can use to participate in the fediverse.
A cozy, fast and secure Mastodon server where everyone is welcome. Run by the folks at ohai.is.

Administered by:

Server stats:

1.8K
active users

ohai.social: AboutStatusProfiles directoryPrivacy policy

Mastodon: AboutGet the appKeyboard shortcutsView source codev4.4.0-nightly.2025-04-01

#galaxy

82 posts47 participants9 posts today
Public
Astronomy Picture of the Day

APOD from 2025-04-14

The Galactic Center in Radio from MeerKAT

MeerKAT's radio image reveals the Milky Way's center, including Sgr A with its supermassive black hole. The vast 2-degree view details many celestial features, while JWST's inset probes star formation and magnetic fields. Optical telescopes can't see this due to dust.

HD image at apod.nasa.gov/apod/ap250414.ht #astronomy #galaxy #moon #infrared #webb #telescope

The Galactic Center in Radio from MeerKAT
The Galactic Center in Radio from MeerKAT
Replied in thread
Public *
grobi

.. you might want to open the replied post (main-thread) to see the whole thread 🔭 😀

compressed version of the NASA archived video:

An Immersive Visualization of the Galactic Center
Video Credit: NASA, CXC, Pontifical Catholic Univ. of Chile, C. Russell et al.

Explanation:
What if you could look out from the center of our Galaxy -- what might you see? Two scientifically-determined possibilities are shown in the featured video, an immersive 360-degree view which allows you to look around in every direction. The pictured computer simulation is based on infrared data from ESO's Very Large Telescope in Chile and X-ray data from NASA's orbiting Chandra X-ray Observatory. As the video starts, you quickly approach Sgr A*, the supermassive black hole in the Galactic center. Then looking out, this 500-year time-lapse simulation shows glowing gas and many points of light orbiting all around you. Many of these points are young Wolf-Rayet stars that have visible hot winds blowing out into surrounding nebulas. Clouds approaching close become elongated, while objects approaching too close fall in. Toward the video's end the simulation repeats, but this time with the dynamic region surrounding Sgr A* expelling hot gas that pushes back against approaching material.

.. please go to the archived page to enjoy the 360° degree view:
apod.nasa.gov/apod/ap180122.ht

#space#galaxy#milkyway
Public
grobi

The featured picture shows an image of our Milky Way's center by the MeerKAT array of 64 radio dishes in South Africa. Spanning four times the angular size of the Moon (2 degrees), the image is impressively vast, deep, and detailed. Many known sources are shown in clear detail, including many with a prefix of Sgr, since the galactic center is in the direction of the constellation Sagittarius. In our galaxy's center lies Sgr A, found here in the image center, which houses the Milky Way's central supermassive black hole. Other sources in the image are not as well understood, including the Arc, just to the left of Sgr A, and numerous filamentary threads. The inset image shows a small patch recently imaged in infrared light with the James Webb Space Telescope to investigate the effects of magnetic fields on star formation.

2025 April 14 The featured image shows the very center of our Milky Way Galaxy as resolved by the MeerKAT array in radio light. Many supernova remnants and unusual filaments are visible. At the upper right is an inset image of a small region taken in infrared by JWST. Please see the explanation in the main post for more detailed information.
#space#galaxy#milkyway
Public
Arp Bot 🤖

Hubble and Legacy Survey image of Arp 282, also known as NGC 169 and NGC 169A.

NGC 169 (bottom) and NGC 169A (top) are interacting, creating delicate streams of stars, gas and dust that visibly link the pair.

In this image, the luminosity comes from Hubble ACS/WFC observations, and color comes from the Legacy Survey.

Credit: NASA, ESA, STScI, J. Dalcanton, Judy Schmidt, Legacy Surveys, D. Lang, NERSC
Source: flickr.com/photos/geckzilla/51

A large spiral galaxy is seen in the center of the frame. It's tilted at an angle, so that it's disk appears as an oval rather than a circle. Dramatic dust lanes cross in front of the center of the galaxy and are backlit by a haze of yellow-white stars. Below the spiral is a smaller disk galaxy seen in shades of blue white. It appears to be at almost a right angle to the large spiral, falling out of the larger galaxy. The two galaxies are connected by a bridge of dusty tendrils, which are also backlit by the main galaxy. This galaxy pair looks a lot more 3D than most interacting galaxies because of their angles and the backlighting effect.
#ArpGalaxy#Galaxy#Space
Public
Arp Bot 🤖

Spitzer image of Arp 107, also known as UGC 5984.

In the shorter wavelength 3.6 micron band (left), the older stars in the small companion to the upper left and the bridge connecting the two galaxies are bright. the middle image at 8 microns provides a clear view of clumps of young stars. The multi-band picture (right) emphasizes this difference in stellar ages.

Credit: NASA, JPL-Caltech, B. J. Smith
Source: spitzer.caltech.edu/image/sig0

A panel showing three views of a pair of merging galaxies. On the right the pair is seen in shades of blue. The galaxy on the bottom right has a single, large spiral arm curving out from the core counterclockwise, from the 9 o'clock to the 3 o'clock positions. The upper left galaxy has a bright blue-white core but only a bit of very faint material. A broad curtain of stars and gas connects the two galaxies’ cores. A few blue dots, which are stars and galaxies are scattered around the black background. In the middle panel, the same galaxies are shown in shades of red. The structures in the bottom right spiral galaxy are still prominent, but only the core of the upper left galaxy is still visible. In the right panel the two views are combined. The bottom right galaxy is a combination of red and blue, with the blue structures extending slightly wider than the red ones. The upper left galaxy and the background stars and galaxies are mostly blue. Text: Interacting galaxy pair Arp 107, NASA/JPL-Caltech/B. J. Smith (East Tennessee State University), Spitzer Space Telescope•IRAC, sig05-006
#ArpGalaxy#Galaxy#Space
Public
Delash
NGC 2403 (also known as Caldwell 7) is an intermediate spiral galaxy in the constellation Camelopardalis. It is an outlying member of the M81 Group, and is approximately 8 million light-years distant.

It bears a similarity to M33, containing numerous star-forming H II regions, but being a little bit larger at approximately 90,000 light-years in diameter compared to the 61,100 light-year diameter of M33.

120x180s
Bortle 5
Berkshire, UK
Askar FRA500
#astrophotography #astronomy #galaxy
#galaxy
ExploreLive feeds
About