Dr Rok Nežič 🇸🇮🇬🇧

Fingers crossed!!

If there is one physics formula everyone knows, it's E=mc².

Einstein proposed the famous equivalence between energy and mass in his second special relativity manuscript. It was received by Annalen der Physik #OTD in 1905, the day after they published his first special relativity paper. 🧪 ⚛️

I know it's this year, I know Harvard is commemorating her in some ways - and we put together a special display on her this summer here in Armagh, too (Northern Ireland - one of our directors was studying at Harvard while she was still working there) 🙂

Cecilia Payne-Gaposchkin ✨ figured out what stars are made of ✨ when she was just 25. 🔭🧪

Her PhD thesis basically established the Harvard astro department — at a time when Harvard didn't officially allow woman students.

I wrote this little profile to mark the 100th anniversary of her thesis:

A lot of people crowding around pancakes (crepes) being served

The grand finale! 😁
#pancakes #EPSCDPS2025

Photo of a conference room with the speaker at the podium on the right and a slide projected on a screen on the left. The slide caption reads: "Thank you! Kiitos!" ("Thank you" in Finnish, where the conference is taking place). On the right is a multicoloured meteor with a smiley face, on the left text reading: "Currently looking for a job!" The image has been slightly edited to remove contact information.

Adding to the collection of job-searching slides :D

(Again, slightly edited to remove some contact information)
#EPSCDPS2025

John Forbes - ISOs are ejected from their host systems with a range of velocities, spreading out into tidal streams. The Sun is inside million and billions of ISO streams. The streams make enable multiple ISOs for the same star to enter a plenary system (but low probability) #EPSCDPS2025

@chrislintott.bsky.social kicks off the “interstellar objects” session with an interesting discussion of how the orbits can link to potential sources of stellar populations, which gives us us context for their potential chemistry #epscdps2025 #epscdps

Trying to steal a phrase from the exoplanet people: to know the interstellar object population you need to understand the Milky Way: know thy galaxy, know thy ISO.

Have interstellar objects ever hit Earth? No confirmed instances based on fireball statistics but intriguing hints. Dusan Marčeta explores the possibilities with a simulation and it could happen! #epscdps #epscdps2025

At #EPSCDPS2025 I've met @plutokiller.com, who discovered Eris and proposed Planet Nine! I've already interacted with him for my book about missing planets, but it has been a pleasure to meet him by person!

Photo of a packed conference room with the speaker at the podium on the left and a slide projected on a screen on the right. The left half of the screen features a meme with a photo of Yoda with bold text overlay that reads: "A NEW JOB I NEED" across two lines in all caps. The image has been slightly edited to remove some personal information.

Love a good "looking for a job!" slide at the end of a presentation 😁

(Slightly edited to remove a QR code; contact Marielle directly if you have a job for her :D)

#EPSCDPS2025

some interesting results from #JWST in the outer solar system in an absolutely packed room. Who put the session on the biggest, best new space telescope in the smallest room? 😅
#EPSCDPS #EPSCDPS2025.

#EPSCDPS2025

Colin Orion Chandler talks up the NSF-DOE Rubin Observatory 🔭 potential for comets, which is - of course - amazing #epscdps2025 #epscdps @vrubinobs.bsky.social

A white and blue poster with text and the title planetary research.

Day 4 of #EPSCDPS #EPSCDPS2025. Kicking off with some cool #JWST talks with some #comets stuff tucked into the afternoon session.
We are also displaying a poster on the new 💎 #OpenAccess #PlanetaryScience journal #PlanetaryResearch today. I'll be there in Lampio foyer from 18.00

The dark, inner shadow of planet Earth is called the umbra. Shaped like a cone extending into space, it has a circular cross section most easily seen during a lunar eclipse. And on the night of September 7/8 the Full Moon passed near the center of Earth's umbral cone, entertaining eclipse watchers around much of our fair planet, including parts of Antarctica, Australia, Asia, Europe, and Africa. Recorded from Zhangjiakou City, China, this timelapse composite image uses successive pictures from the total lunar eclipse, progressing left to right, to reveal the curved cross-section of the umbral shadow sliding across the Moon. Sunlight scattered by the atmosphere into Earth's umbra causes the lunar surface to appear reddened during totality. But close to the umbra's edge, the limb of the eclipsed Moon shows a distinct blue hue. The blue eclipsed moonlight originates as rays of sunlight pass through layers high in the upper stratosphere, colored by ozone that scatters red light and transmits blue. In the total phase of this leisurely lunar eclipse, the Moon was completely within the Earth's umbra for about 83 minutes.

🔭 The Umbra of Earth

Image Credit & Copyright: Wang Letian (Eyes at Night)

apod.nasa.gov/apod/ap25091...

So I found a neat rock

Silvia Protopapa talks about first JWST methane gas detection on dwarf planet Makemake. Third large KBO body with volatile release (Pluto and Triton - it's a captured dwarf planet orbiting Neptune are the other two). This is either an expanding coma or a bound atmosphere! Wow! #EPSCDPS2025

Fundamentally the #Mars announcement NASA is making today boils down to: there could have been some chemical reactions in these ancient rocks that could have been mediated by living organisms. The word "could" is doing a LOT of heavy lifting there. 🧪

Teddy Kareta talking about P/2023 V6 - it looks like activity shut off sometime in late 2024. See a point source in HST. Wasn’t expect V6 to shut off nor be small. This means that we might be able to see progenitors of Jupiter impactors before they happen with the LSST #EPSCDPS2025

Photo of a conference lanyard with a few pins, a large name badge, and a keychain string of beads attached to it

A fun little bit of Tuesday morning making a Solar System keychain at the @europlanetmedia.bsky.social Regional Hubs stall with Thibaut Roger!! 😁☀️🌍🌕🔴🪐☄️ #EPSCDPS2025

(the larger black one in the middle is the asteroid belt, the white one at the end the comet reservoir :D also spot the Moon!)

WOOHOO There is a candidate mission to go to the asteroid Apophis! I'm listening to a press conference from EPSC-DPS in Helsinki where ESA is sharing about their RAMSES Mission to Characterize this asteroid that will not hit earth bit will get really damn close.

A night-time panorama across a lake or bay in Helsinki, showing buildings and trees on the opposite shore and reflected in the water. In the left third, in the sky, is a fully eclipsed Moon, deep red in colour. The eclipsed Moon is also visibly reflected in the water.

Starting #EPSCDPS2025 in style by enjoying a total lunar eclipse in Helsinki 🔴🌕

It was a bit of a wait for it to clear the haze, and I think I might have been the first one in the group to spot its dim glow when it did 😎

A nighttime shot of a city skyline. The Moon appears low in the sky and is in full eclipse, all red, brighter at the bottom left and darker towards the upper right.

The same cityscape photo, but zoomed in closer on the Moon. The dark and light regions of the lunar surface are just about visible.

Looks like the clouds parted at #EPSCDPS2025 just in time for the #LunarEclipse!

3 things ahout Apophis we have to communicate as science community:
1) Apophis will safely pass the Earth
2) Apophis will safely pass the Earth
3) Apophis will safely pass the Earth

Dr. Richard Binzel (MIT) at the Keynote talk in room Jupiter #EPSCDPS2025

A photo of a faint red moon above some bright buildings in Helsinki

Engaged in some light lunar eclipse spotting on the first night of #EPSCDPS2025
🔭

I saw the robot as well - but persevered through the haze to have a rather nice view of the lunar eclipse! :D

Corporate wants you to spot the difference. #P4A2025

A comic panel by srgrafo used as a meme template. It features a huge knight protecting a tiny guy from a rain of arrows. There’s a speech bubble saying “should John get a tissue?” The arrows are labelled “yes”, “please” and “please yes” and other variations. The little guy is labelled as “John raising money for the P4A”. The knight is labelled as “Yologurt” and is handing the little guy the word “no”.

First time memeing for the P4A.
Love that nobody will understand other than the people that were watching the stream just now.
#P4A2025

www.youtube.com/live/Kq8KDKq...