We're opening up access to our new flagship model, GPT-4o, and features like browse, data analysis, and memory to everyone for free (with limits). openai.com/index/gpt-4o-a…

Live look at America (or at least my Twitter feed) tonight:

China is about to bring a 5-pound bag of rocks back to Earth - from the far side of the Moon! First chance to sample mineral resources there. Landing very soon.
Details: space.com/china-change-6…
(video courtesy China Central Television)

BREAKING: The geomagnetic storm impacting Earth is now officially a G5, the highest category on the impact scale. Collapse of power grids and navigation systems possible.

Extreme (G5) geomagnetic conditions have been observed!

BREAKING: Geomagnetic storm reaches G5 level ('extreme'), first time in 21 years

There're few billionaires whose hobby is fundamental physics. Jim Simons built the largest private funder in this field

It has made an enormous difference and continues to do so by funding education, experiments and researchers, more important today than ever!

RIP Jim Simons

Strongest aurora in 20 years this evening.

This is the astounding view as far south as Switzerland a short while ago …on top of Jungfraujoch 😍😍

via Jungfrau.ch

Continuing on the technical terms, ;) the main phase of this storm (according to the real-time Dst) is -231 nT. Nearly superstorm level (-250 nT) and not seen for *many* years I believe. wdc.kugi.kyoto-u.ac.jp/dst_realtime/2… read more about red aurora here: blog.aurorasaurus.org/?p=2030

Holy cow, most of Europe is glowing pink right now under the aurora! foto-webcam.eu/webcam/luckner…

Today is my last day as a professional astronomer, and I already miss all the wonderful people who I have had the immense privilege of working with over the past 15 years. But, I'm excited for what comes next, and y'all know where to find me: github.com/google/jax

❤️

Large sunspot groups and strong solar flares led to the issuance of SWPC's first G4 Watch since 2005...

G4 conditions have been observed...

Me last week: Once the semester's over and I finish grading, I can get back to being productive on my research!

Me this week, with semester over and grading finished:

Newly-discovered #asteroid , 2024 JT3, will come much closer than our geostationary satellites late tonight/early tomorrow morning. It will brighten to magnitude 13 as it passes over the North Pole. To see it, you will need a location-specific ephemeris such as JPL Horizons.

Dr. Jane Rigby is a groundbreaking astrophysicist in charge of the most powerful telescope ever launched into space. Her work embodies the American spirit of adventure and wonder.

Here's my deep dive into why Starliner is seven years late.

arstechnica.com/space/2024/05/…

Renormalization group without any math:

For the longest time we discovered more fundamental structures in nature. The further we zoom in the more new structure we see.

The discovery of quarks is a good example

Molecules → Atoms → nuclei → protons → quarks

🧵1/13

You won’t get it man, you had to be there.

!!! Jane's medalling here: youtu.be/aqBVADKnNzM?t=…