saurabh w jha

my regards are the best

wow, what a title !!! Rutgers University feature on me + GRB 250702B! It was so nice to work with Kitta on this. Hope you enjoy the read !

🧪🔭👩🏼‍🔬☄️🦖

www.rutgers.edu/news/astroph...

Black Hole Eats Star: NASA Missions Discover Record-Setting Blast - NASA Science Astronomers have been poring over a flood of data from NASA satellites and other facilities as they try to work out what was responsible for an extraordinary

I am so elated to share with you the NASA press release on the mysterious GRB 250702B! It features comments from me about our JWST/NIRCam imaging, which Alyssa Pagan at @stsci.edu made a beautiful compilation of for you to see. Please read to learn more !!!

🧪🔭☄️👩‍🔬🦖

science.nasa.gov/science-rese...

My dad abhors any negative comments about immigrants. Asked him recently why he’s so strong on it: ‘Because we’re always happy to take the rich and clever ones. Which means it’s not about disliking immigrants. It’s about disliking the poor and vulnerable. And that’s a bad human instinct.’

Nancy Grace Roman telescope is out of the thermal vacuum chamber and getting ready to launch in 2026

Aurora, tree and paddock

Aurora, trees and powerlines

Paddock, Aurora and stars

Headlights. Stars, powerlines, aurora

Detour Road, North Wangaratta.

#AuroraAustralis #Aurora

Image of the Southern African Large Telescope on the Karoo plateau

Celebrating the 20th anniversary of the Southern African Large Telescope 🔭

yeah you could keep the separate pots for small, large, treasury…

you could also allow people to rarely flag “fatally flawed” or “absolutely must do” for some further review

quick distributed peer review… every proposer scores 10 proposals 1 to 5 within a week of submission (or else their proposal is withdrawn) followed by a lottery where each proposal is weighted by its average score using some logistic-like function.

How we sharpened the James Webb telescope’s vision from a million kilometres away The only Australian hardware on board the legendary telescope is starting to fulfil its duties.

Thrilled to have two years' of work out, in a pair of papers led by @gradientrider.bsky.social and @maxecharles.bsky.social.

We've built a data-driven calibration of the James Webb Interferometer to near its fundamental limits for high-res imaging - explainer at @aunz.theconversation.com!

The petition link is in the article - if you’re in the local DMV community you can sign for support!

Right now, academic freedom is under attack in the United States. Actually, "under attack" undersells it. "Existentially threatened" is better, along with "already lost in many places."

Come for the fascinating historical poetry about exploding stars, stay for the excellent technical footnote about what different communities are referring to when they talk about “type Iax” supernovae.

A nice write-up of the new @cunygc-astro.bsky.social CUNY-Rutgers-Columbia partnership around Rubin LSST!!

🔭

Milestone Moyal Medal awarded to astrophysicist Tamara Davis Professor Davis, an astrophysicist at UQ’s School of Mathematics, will receive the medal and deliver the 2025 Moyal Lecture on Thursday 9 October. Her lecture, titled ‘New light on dark energy: the…

Congratulations to OzGrav's Deputy Director, Professor Tamara Davis AM, recipient of the 2025 Moyal Medal awarded by Macquarie University for her outstanding contributions to astrophysics and cosmology.

Read more here: lighthouse.mq.edu.au/media-releas...

Figure 1

Figure 2

Figure 3

Figure 4

Tip of the Red Giant Branch Distances to NGC 1316, NGC 1380, NGC 1404, & NGC 4457: A Pilot Study of a Parallel Distance Ladder Using Type Ia Supernovae in Early-Type Host Galaxies. Max J. B. Newman et. al. https://arxiv.org/abs/2508.20023

An extravagantly colored spiral galaxy. Red, orange, dusty arms of infrared light blend together in one splotchy, swirling mess. Bright patches of speckled star formation dot the arms all over, some tiny and some large and complex. Soft, blue x-ray light is seen along a diagonal axis from the upper left to lower right, along with some small fuzzy dots speckling the image in seemingly unrelated ways. The center is bright white with relatively smaller magenta colored jets along the same diagonal axis.

An image I made quite a while ago finally got published in a multi-image press release at the Chandra website today. HST, Chandra, VLA, and JWST data all in one.
flic.kr/p/2qb3dUX
chandra.si.edu/photo/2025/c...

very cool new result led by Steve Schulze focused on SN2021yfj - the first of a new supernova subclass, Type Ien (“one - e - n”). This star lost its H, He, & C layers, and shows strong emission from the inner S + Si layers !! Check out his Science Friday interview about this science!

🧪🔭☄️

My favorite galaxy. Spot the difference between this image and my profile pic. #SN1998bu #M96

Two side-by-side images of a zoomed in portion of a galaxy, showing the same field of view. The left panel contains a very bright star with four diffraction spikes just left of center. In the right panel, the star is still visible but much fainter.

#NASARoman’s High-Latitude Time-Domain Survey will find exploding stars that act as signposts to measure the universe’s expansion and the influence of dark energy. (1/6) 🧵 🔭 🧪

A top-down view of a spiral galaxy, showing its brightly shining centre, its broad spiral arms and the faint halo around its disc, as well as distant galaxies and stars on a dark background. Large blue clouds of gas speckled with small stars and strands of dark dust swirl around the galaxy’s disc. A couple of the background galaxies are large enough that their own swirling spiral arms can be seen.

📷 This NASA/ESA #Hubble image shows spiral galaxy NGC 1309, with its bluish stars, brown gas clouds and white centre, as well as hundreds of distant background galaxies (nearly every smudge, streak and blob is an individual galaxy!)🧪🔭 @stsci.edu @science.esa.int

🔗 esahubble.org/images/potw2...

[neon rainbow pattern background] THE EDGE OF SPACE-TIME The universe reimagined -- through pop culture, poetry, and theoretical physics. From the award-winning author of The Disordered Cosmos image of the cover of the book which features circular artwork in the center, one half of it a black and white pattern and the other half a neon rainbow pattern PREORDER NOW Coming 4/7/26 image of the Pantheon logo

📣📣 BOOK NEWS 📣📣

I'm excited to share the cover and release date of Book #2, #EdgeOfSpaceTime, which is now available for PREORDER!!

You can order from ANY bookstore, including your local indie!

More details on preordering here:
www.penguinrandomhouse.com/books/746817...

What's the book about? 🧵

Talk about The Wire, Sopranos, Game of Thrones all you want, but the greatest US television program ever made is Sesame Street. It's not even close. 50+ years of treating kids across class, ethnicity, religion not as mini-consumers...but as citizens with a stake in this world.

Opinion | Something Extraordinary Is Happening All Over the World

An absolutely monumental piece from @polgreen.bsky.social this morning. Appreciate the research, array of sources, and nuanced thinking on the complicated issue of migration.
Gift link: www.nytimes.com/2025/01/31/o...

My linocut portrait of Henrietta Swan Leavitt is printed in silvery lavender ink on Japanese kozo (or mulberry paper). Behind her is a line showing stellar luminosity (capital L with subscript sun-symbol, a circle with a dot) as a function of time (t). She is printed over constellations in gold (Cepheus, Cassiopeia, Draco, Ursa Minor and Andromeda). ⁠ ⁠

Happy birthday to #astronomer Henrietta Swan Leavitt (1868-1921) who set the scale of our Universe. 🧪🐡👩🏼‍🔬🎢🔭#histsci Behind her in my portrait is a line showing stellar luminosity (capital L with subscript sun-symbol, a circle with a dot) as a function of time (t). She is printed over constellations 🧵

A sprawling, textured field of galaxies scattered across the deep black of space. It is filled with the delicate smudges and glowing cores of galaxies of many shapes, sizes and colors, as well as the bright multi-colored points of stars. The image focuses on a collection of interacting galaxies connected by delicate streams of stars. At top center lies a large elliptical galaxy that is dense and smooth, like a polished stone glowing with golden light. Like delicate spider silk or stretched taffy, these stellar bridges link the large elliptical to the few larger galaxies beneath, evidence of past collisions. All throughout the image, thousands of galaxies gather in clusters or are spread throughout, like glittering gems strewn on a table. Some are sharp-edged and spiral, like coiled ribbons; others round and diffuse, like polished pebbles. Still others are just smudges of various colors against the black of space. The background is peppered with pinpoint stars in reds, yellows, and blues, crisp against the velvet black.

A cosmic tapestry of glowing tan and pink gas clouds with dark dust lanes. In the upper right, the Trifid Nebula resembles a small flower in space. Its soft, pinkish gas petals are surrounded by blue gas, and streaked with dark, finger-like veins of dust that divide it into three parts. It radiates a gentle, misty glow, diffuse and soft like the warmth of breath on a cold hand. To the lower left, the much larger Lagoon Nebula stretches wide like a churning sea of magenta gas, with bright blue, knotted clumps sprinkled throughout where new stars are born. Both nebulae are embedded in a soft tan backdrop of gas that is brighter on the left than on the right, etched with dark tendrils of dust and sprinkled with the pinpricks of millions of stars.

A sprawling, textured field of galaxies scattered across the deep black of space. It is filled with the delicate smudges and glowing cores of galaxies of many shapes, sizes and colors, as well as the bright multi-colored points of stars. To the lower left is a region filled with the hundreds of golden glittering gems of a distant galaxy cluster. In the foreground, below and right of center, two blue spiral galaxies look like eyes beneath the entangled mass of a triple galaxy merger in the upper right. A few bright blue points of foreground stars pierce the glittering tapestry. All throughout the image, thousands of galaxies gather in clusters or are spread throughout, like glittering gems strewn on a table. Some are sharp-edged and spiral, like coiled ribbons; others round and diffuse, like polished pebbles. Still others are just smudges of various colors against the black of space. The background is peppered with pinpoint stars in reds, yellows, and blues, crisp against the velvet black.

Introducing...your sneak peek at the cosmos captured by NSF–DOE Vera C. Rubin Observatory!

Can you guess these regions of sky?

This is just a small peek...join us at 11am US EDT for your full First Look at how Rubin will #CaptureTheCosmos! 🔭🧪

#RubinFirstLook
ls.st/rubin-first-look-livestream

Welcome to a new era in astronomy and astrophysics ✨🔭🧪

Get ready to join us virtually for the reveal of Rubin's first images! #RubinFirstLook
🗓️ June 23, 2025
⌚️ 11am US EDT
🔗 ls.st/rubin-first-look-livestream

CDC Table: Recommended Child and Adolescent Immunization Schedule for Ages 18 Years or Younger, United States, 2025

Better save a copy of this now

Molecular hydrogen in the extremely metal- and dust-poor galaxy Leo P - Nature Observations from the JWST MIRI-MRS instrument reveal the detection of rotational emission from molecular hydrogen near the only O-type star in the 3% solar metallicity galaxy Leo P, providing confirm...

Delighted that the first paper from our Cy2 JWST program was published today, reporting the discovery of molecular hydrogen in the 3% Solar metallicity galaxy Leo P. This was a very fun project with @karinsandstrom.bsky.social strom.bsky.social and fabulous co-authors! www.nature.com/articles/s41...