Espirales

Astronomía, Astronomy.

[squids-among-stars]

Squidolus [Day:631 Hour:12]

[wonders-of-the-cosmos]

Detailed view of NGC 6362 globular cluster

Credit: ESA/Hubble & NASA

[the-wolf-and-moon]

M64, Blackeye Galaxy

[wonders-of-the-cosmos]

Hubble Space Telescope Image of Globular Cluster NGC 6397

Credit: NASA, ESA, and H. Richer (University of British Columbia)

[sci-universe]

The Great Gig in the Sky

Crazily enough, it’s been 7 years since I started sharing astrophotography from photo wizards around the world on this platform. That’s why I am stoked to share my own first image of a galaxy with you!

This is the Whirlpool Galaxy, which is interacting with a smaller galaxy and distorting it while the collision is still in action. Dust lanes around the smaller companion are a manifestation of the galactic tide forces (seen better with the highest screen brightness). New stars are forming along the spiral arms, compressing hydrogen gas and glowing with red light. The pair is estimated to be 15-25 million light-years away from the Milky Way.

Do you have a favourite galaxy?

Details: color composite of the B, V, R, Ha filters with additional dark, bias, and flat field frames; exposure time of 20 min; Andor camera, University of Liège TRAPPIST-North 60 cm telescope

I’m also on Instagram & Twitter 🚀

[startswithabang]

Hubble Catches New Stars, Individually, Forming In Galaxies Beyond The Milky Way

“There are a massive variety of star-forming regions nearby, and Hubble’s new Legacy ExtraGalactic UV Survey (LEGUS) is now the sharpest, most comprehensive one ever.  By imaging 50 nearby, star-forming spiral and dwarf galaxies, astronomers can see how the galactic environment affects star-formation.”

Within galaxies, new stars are going to be formed from the existing population of gas. But how that gas collapses and forms stars, as well as the types, numbers, and locations of the stars that will arise, is highly dependent on the galactic environment into which they are born. Dwarf galaxies, for example, tend to form stars when a nearby gravitational interaction triggers them. These bursts occur periodically, leading to multiple populations of stars of different ages. Spirals, on the other hand, form their new stars mostly along the lines traced by their arms, where the dust and gas is densest. Thanks to the Hubble Space Telescope, we’re capable of finding these stars and resolving them individually, using a combination of optical and ultraviolet data.

The best part? These are individually resolved stars from well outside our own galaxy: in 50 independent ones. Here’s what Hubble’s new LEGUS survey is revealing.

[the-wolf-and-moon]

N11, Cotton Candy Nebula

[wonders-of-the-cosmos]

These swirls of red light are an aurora on the south pole of Saturn.

 Image: NASA/ESA/STScI/A. Schaller. 

[spinningblueball]

Galaxy Cluster Abell 2666

[galaxythreads1]

Hubble’s Galaxy Cluster Cornucopia via NASA https://ift.tt/2xexaWF

[spacettf]

Taking a Shine to Enceladus by NASA’s Marshall Space Flight Center on Flickr.

[chibinotan]

Massive Galaxy Cluster

[spacettf]

the eye of the dragon by Bernal Saborio G. (berkuspic) on Flickr.

[chibinotan]

Light Bending Cluster and Einstein Ring

[the-wolf-and-moon]

Orion and The Witch 

[wonders-of-the-cosmos]

An interesting galaxy has been circled in this NASA/ESA Hubble Space Telescope image. The galaxy — one of a group of galaxies called Luminous Red Galaxies — has an unusually large mass, containing about ten times the mass of the Milky Way. However, it’s actually the blue horseshoe shape that circumscribes the red galaxy that is the real prize in this image. This blue horseshoe is a distant galaxy that has been magnified and warped into a nearly complete ring by the strong gravitational pull of the massive foreground Luminous Red Galaxy. To see such a so-called Einstein Ring required the fortunate alignment of the foreground and background galaxies, making this object’s nickname “the Cosmic Horseshoe” particularly apt. The Cosmic Horseshoe is one of the best examples of an Einstein Ring. It also gives us a tantalising view of the early Universe: the blue galaxy’s redshift — a measure of how the wavelength of its light has been stretched by the expansion of the cosmos — is approximately 2.4. This means we see it as it was about 3 billion years after the Big Bang. The Universe is now 13.7 billion years old.

Credit:ESA/Hubble & NASA

[nebulagalore]