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1y

There is something seriously wrong with our understanding of the universe. Scientists using the James Webb and Hubble space telescopes have triple-checked and confirmed that depending on where we look, the universe is expanding at bafflingly different rates. Live Science explains more, including how scientists are ruling out a measurement error as the cause of the “Hubble Tension.” https://flip.it/VDvM6g
#Science #Space #Hubble #HubbleTension #Universe #JWST

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1y

Wooooaaahhhh!

The new JWST image of a small bit of the Horsehead Nebula is INCREDIBLE.

To give you a sense of scale here, here’s an image of the nebula from my backyard. That small white box … that’s the JWST field of view! 🤯🤯🤯

Look at ALL those galaxies, all in that tiny white box.

JWST image credit: ESA/Webb, NASA, CSA, K. Misselt and A. Abergel. [updated]

Dodgy image with white boxes is my own.

#JWST #SpaceTelescope #HorseheadNebula #Astronomy #Galaxies #Astrodon

Two tile image showing a nebula in space that is a long swath of reddish gas with a dark cloud in the centre. The dark cloud is in the shape of a Horsehead. The top tile is a wide angle shot whilst the lower tile is a zoomed in shot. A white box is annotated on the region of the Horsehead nebula that indicates the field of view from the telescope.

ALT

$At the bottom of the image a small portion of the Horsehead Nebula is seen close-in, as a curved wall of thick, smoky gas and dust. Above the nebula various distant stars and galaxies can be seen up to the top of the image. One star is very bright and large, with six long diffraction spikes that cross the image. The background fades from a dark red colour above the nebula to black.$

ALT

Edited 1y ago

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81d

Astronomers using the #JamesWebbTelescope #JWST have found water vapor, carbon dioxide, and methane on planet K2-18b

2.6x Earth radius, in the habitable zone (liquid water possible), 124 ly away

The cool part:

They also found DMS. Dimethyl Sulfide (probably, the signal is weak, they need to confirm)

you know DMS as "the smell of the sea"

We don't know of any geochemical processes that make DMS

The only process we know of that makes DMS, is life

👀

https://www.newscientist.com/article/2477008-astronomers-claim-strongest-evidence-of-alien-life-yet/

#Astronomy

Edited 81d ago

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52d

In a new study using #JWST, scientists have discovered a hidden population of tiny asteroids in our solar system. These objects might be a more significant threat than we ever realized.

In a recent #SETILive episode, Senior Planetary Astronomer Dr. Franck Marchis and the study's lead authors, Dr. Artem Y. Burdanov and Dr. Julien de Wit, discussed the role of minor asteroids and what they can reveal about potential threats to Earth.

Learn more: https://www.seti.org/tiny-asteroids-big-threats-how-jwst-uncovering-hidden-worlds-our-solar-system

#science #scicomm

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