ELT: What Discoveries Will The World's Largest Telescope Give Us?

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In Chile's Atacama Desert, the Extremely Large Telescope, the world's largest telescope, is being built. It will be equipped with an optical lens of more than 39 meters in diameter, occupying an area larger than a basketball court.

Thanks to this, it will have a sharpness and range superior to those currently held by the Hubble Space Telescope and even more incredible than what the new James Web Space Telescope will offer. Stay to find out.

One of the main objectives of the ELT telescope is the discovery of new extrasolar planets and the study of the atmospheres of these planets; it will also be responsible for studying the protoplanetary disks in other stars to understand better how solar systems arise, as well as studying dark energy and galaxy formation.

The telescope is currently under construction. Although the pandemic caused setbacks, the European Southern Observatory (ESO) has announced that, if the work continues uninterrupted, the telescope will be completed in 2027.

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Credits: Nasa/Shutterstock/Storyblocks/Elon Musk/SpaceX/ESA/ESO/ Flickr

Video Chapters:
00:00 Introduction
00:40 Extremely Large Telescope ( ELT)
02:07 Atmospheric Turbulence
03:35 Adaptive Optics
05:33 The Challenge
07:00 Active optics
09:34 Scope
10:48 Expected Discoveries

#insanecuriosity #elt #extremelylargetelescope

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InsaneCuriosity

I am perpetually amazed by adaptive optics. An absolutely amazing technology.

PeterHamiltonz

@4:50 Two millimeters is not "much thinner than human hair". Maybe you meant 2 micrometers? A human hair is about 70 microns (70 micrometers (0.07millimeters)) thick.

GregConquest

"That's no telescope. It's a space station."

Mikko_Kivioja

This video had a number of errors in pronunciation, fact and concept. The creator needs a better editor. It should have been noted that there are three Earth based giant telescopes being constructed: The Giant Magellan Telescope (GMT) with a primary mirror and collecting area equivalent to a 22.0 m (72.2 ft) located north-northeast of La Serena, Chile with a projected first light 2029; The Thirty Meter Telescope its planned location on Mauna Kea, with a projected first light 2029 (protests have stopped work) and the Extremely Large Telescope (ELT) with a 39.3-metre-diameter (130-foot) segmented primary mirror with projected first light perhaps as early as 2028. These telescopes are not in competition with space-based telescopes. Space based telescopes have advantages over Earth based telescopes in frequency sensitivity and ability for very long exposures among other things. Earth based telescopes can be built much cheaper, can be modified and repaired easily and can be constructed much larger than space-based telescopes. They complement each other and offer their own unique advantages.

WWeronko

Jwst isn't a full range visible light telescope tho so they won't really be competing

MrKKUT

Can’t wait to see the images. Pluto is still the 9th planet btw.

luvit

JWST will not cover full visible light, so it is not competing with ELT. JWST will work in infrared spectrum.

HessamMirnezami

The first stone of the telescope was ceremonially laid on 26 May 2017, initiating the construction of the dome's main structure and telescope, with first light being planned for 2027.

jackhydrazine

Well I hope I'll still be around to see it. Living in this crazy world... 🤔

Pray

Scott Manley just released a video that would go quite well with this if anyone wants to know a little more about these beasts :~) Good video, quite informative if slightly confusing in parts. I am curious as to how a visible and near-infrared earth based telescope will be able to see further than one based 1.5 million km in space with both the earth and a special heat sheild to block light/heat from its eye. Granted it may give better visible light images than Webb but Webb doesn't go there so....

pegasusted

I am particularly looking forward to the results of direct imaging of “nearby” exoplanets, and of the detailed study of the electromagnetic spectra of these exoplanets in the habitable zones of their parent stars.

hegemonersmith

If it can see only as far into the infrared as the NEAR infrared then how will it supposedly image the first stars, as Webb will be able to do?

mortkebab

@4:35 "the mirror is less than 2.0 mm thick much thinner than a human hair". The average human hair width ranges from 0.016 to 0.05mm. Now we all gotta ask the question; what else did "InsaneCuriosity" get wrong?

john-ugnc