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Beiträge, die mit Astrophysics getaggt sind

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Beiträge, die mit Astrophysics getaggt sind

1/ When we first joined #mastodon we posted an image of our Extremely Large Telescope, currently under construction in #Chile, and we loved the enthusiasm it generated! Today we share with you a stunning time-lapse of the construction during last year: youtube.com/watch?v=KRcVJf0ims…

#astrodon #astronomy #astrophysics #space #science


Time-lapse of the construction of the world's largest telescope

ESO's Extremely Large Telescope keeps moving forward in Chile! A lot happened in 2024: we started covering the dome with protective cladding, and the structu...
YouTube
#mastodon #science #chile #astronomy #Astrophysics #Space #Astrodon

Taken with the VLT Survey Telescope (VST) at our Paranal Observatory, this image shows galaxy NGC 3640 and the close, smaller galaxy NGC 3641, now in NGC 3640's path.

A team of astronomers used the VST to analyse their globular clusters –– dense spherical conglomerations of old stars. These usually contain some of the first stars created within a galaxy and can therefore act as fossil markers, revealing the galaxy’s history, even after merging events.

The results confirm that NGC 3640 has engulfed other galaxies before. Yet it also shows that the interaction between NGC 3640 and NGC 3641, while fast, is not happening close enough for NGC 3640 to pose a threat... for now.

Read more: eso.org/public/images/potw2507…

📷 ESO/INAF/M. Mirabile et al./R. Ragusa et al.

#astrodon #astronomy #astrophysics #space #science

A telescopic image of two galaxies against a black background of tiny colourful dots. The galaxies are both smooth, white smudges with a bright core and faint outskirts. One of the galaxies is brighter and fainter than the other, and is surrounded by some wispy filaments.

Not too close encounters of the galactic kind

www.eso.org
#science #astronomy #Astrophysics #Space #Astrodon

This Picture of the Week shows the clearest image yet of a filament from the cosmic web of dark matter!

Captured with ESO’s Very Large Telescope (VLT) in #Chile and made of gas clumped together by the influence of dark matter, it stretches out for 3 million light-years, connecting two distant galaxies in the early Universe 😯

Observing the faint glow of this gas required about 150 hours of observing time!

Learn more here: eso.org/public/images/potw2504…

📷 ESO/D. Tornotti et al./Hubble: M. Revalski, P. Francis et al.

#astrodon #astronomy #astrophysics #space #science

The image shows countless stars and galaxies in the background. Two galaxies are shown at the forefront, each with a bright nucleus, which indicates the presence of a quasar. The galaxies appear like large nebulae, without a concrete shape. The content of the galaxies extend beyond their immediate shape, forming a bridge that connects the two galaxies. This bridge is a cosmic filament.

Revealing a filament from the cosmic web

www.eso.org
#science #chile #astronomy #Astrophysics #Space #Astrodon

New laser-sharp vision for Paranal’s facilities! 😎

In this image, you see the first of nine new lasers that are being built for our Extremely Large Telescope (ELT), currently under construction, and Very Large Telescope Interferometer (VLTI), both located at Paranal in #Chile

The laser projection systems are being built in the Netherlands, and the first one has now successfully passed a review by our engineers ✅ 🎉

🤔 But why do telescopes need lasers? They excite sodium atoms high up in the atmosphere, creating artificial "stars". By monitoring these "stars" we can measure and correct atmospheric turbulence in real time with a fast deformable mirror, obtaining very sharp images!

Read more: eso.org/public/images/potw2503…

📷 ESO/TNO/Demcon/Fred Kamphues

#astrodon #astronomy #astrophysics #space #science #technology

At the centre of the image, a big square machine is standing, its top part a closed grey box, containing a laser, resting on top of an illuminated network of intricate machinery. It is standing on a yellow slider. To the right of the machine, a man wearing safety goggles and gloves is standing on a stepping ladder, installing a part on a big black vertical tube, as high as he is, attached to the back of the square machine. On top, the tube is glowing yellow.

New laser-sharp vision for Paranal’s facilities

www.eso.org
#technology #science #chile #astronomy #Astrophysics #Space #Astrodon

#HappyNewYear 🎉 Boost your #NewYear resolution with adaptive optics. By deforming a thin flexible mirror a thousand times per second you can correct atmospheric turbulence and get sharp astronomical images!

➡️ eso.org/public/teles-instr/tec…

📷 ESO/P. Weilbacher (AIP)

#astrodon #astronomy #astrophysics #space #science

Two telescopic images of the planet Neptune side by side. The left one, labeled "adaptive optics", is very crisp and shows detailed white clouds against the planet's deep blue disc. The right one, labeled "no adaptive optics", shows a blurred disc where no details can be discerned.

Adaptive Optics

Astronomers have turned to a method called adaptive optics. Sophisticated, deformable mirrors controlled by computers can correct in real-time for the distortion caused by the turbulence of the Earth's atmosphere, making the images obtained almost as…
www.eso.org
#science #astronomy #Astrophysics #Space #Astrodon #happynewyear #newyear

After all, black holes are not as destructive as we thought! 😮

Using our Very Large Telescope, astronomers have discovered, for the first time ever, a binary star close to our galaxy's supermassive black hole. Binary stars are extremely common throughout the galaxy but not close to the black hole, which makes this new system really interesting!

Named D9, it looks like a single dot, but its speed wobbles periodically back and forth, revealing that this is in fact two stars orbiting each other as they move together around the black hole.

Interested? Read more: eso.org/public/news/eso2418/

Video summary: youtube.com/watch?v=SQVG7pqcHT…

📷 ESO/F. Peißker et al., S. Guisard

#astrodon #astronomy #astrophysics #space #science

The image shows a section of our galaxy, the Milky Way, in the night sky. This is where the supermassive blackhole and the newly discovered binary star around it are located. The Milky Way traverses the image diagonally and is a spectacle of light and darkness. Its millions of stars illuminate the picture, but light is often blocked by large dark clouds of gas and dust that create eerie shapes. It also contains stars and small nebulae of red, pink and blue colours. In the background, the sky is dark, but full of stars of different sizes and colours. The centre of the galaxy with the binary star appears in a close-up on one corner of the image. This is a pixelated mapping of the hydrogen emission of the region around the star pair D9. Bright orange to white patches represent high hydrogen levels (indicating stars), black, represents very low hydrogen emission. Most of the centre of the image is dark with a few wisps of dark orange. The black hole and the binary D9 are indicated.

First ever binary star found near our galaxy’s supermassive black hole

An international team of researchers has detected a binary star orbiting close to Sagittarius A*, the supermassive black hole at the centre of our galaxy.
www.eso.org
#science #astronomy #Astrophysics #Space #Astrodon

#Introduction Hi #fediverse ! We’re the European Southern Observatory, and we design, build and operate ground-based telescopes.

One of them is our Extremely Large Telescope, currently under construction in #Chile. It will have a 39 m mirror, and its rotating enclosure will weigh 6100 tonnes, or about 700 mastodons!

We’re looking forward to chatting with all of you about #astronomy

📷 ESO/G. Vecchia

#astrodon #astrophysics #space #science

The giant metal frame of a dome takes up most of the picture frame, contrasting with the brown hills and a thin horizontal line of blue sky in the background. The dome's frame is not yet fully covered in the middle, so the dark brown landscape behind it shows. The big opening in the dome's roof shows the interior, still a construction site with a structure of white beams. In front of the big building is one red crane, taller than the dome.
#fediverse #science #introduction #chile #astronomy #Astrophysics #Space #Astrodon

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