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41d

This Friday, travel back to the dawn of the universe. 🌌

📽️ Free screening of Cosmic Dawn + live chat with SETI Institute astronomer Dr. Mark Showalter
🗓 Aug 22 | 6PM PT | Virtual

🎟️ Reserve your spot today: https://us02web.zoom.us/webinar/register/9717545241481/WN_cZs-n2X2Sk6jlWicDVaM5A#/registration

#space #science #jwst

Outline of the sixteen mirror frames of the JWST, with an image of the Orion Nebula taken by JWST in the frames. Pink and yellow streaks of light reach down to the bottom of the image. Text: Cosmic Dawn, the Untold Story of the James Webb Space Telescope. Friday, August 22, 2025 at 6:00 pm (PT). Followed by a conversation with planetary astronomer Dr. Mark Showalter. Register online to book your seat!

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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.

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

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Edited 1y ago

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137d

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