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Julio

@aprea.bsky.social

Sea and Space Exploration

17 Posts91 Follower325 Folgt
ESA Space Transport@transport.esa.int · last yr.

Today is International Biodiversity day! What does that have to do with rockets? Some of the satellites we send to space are used to track biodiversity... and our designers like to do cool infographics that compare payloads to animal weight! You’re whale-come! 🐋

Infographic showing the match between animals and ESA's rockets. To space! But on which rocket? Teams at Mission Control match the needs of ESA missions with the perfect rocket. The choice of rocket depends primarily on the mass of the payload and where it needs to go. The further from Earth a spacecraft needs to be lifted, and the more massive it is, the more fuel that is needed. To the Moon and beyond The minimum velocity required to get beyond Earth’s gravitational sphere of influence is 11.2 km per second, after which point spacecraft engines and planetary flybys are used to reach deep space destinations. The mighty Ariane 64 can accelerate 6900 kg (or a large orca) to this important speed. To geostationary transfer orbit Most communication and weather satellites live about 36 000 km above Earth’s equator in geostationary orbit - from where they appear to hover unmoving above our heads. The Ariane 62 can lift 5000 kg (or an Asian elephant) to the geostationary transfer orbit, and the Ariane 64, 11 500 kg (or a whale shark), from where spacecraft boost themselves into geostationary orbit. Orbiting near Earth Most human-made objects in space reside in low-Earth orbit, from 100 km to 2000 km above Earth’s surface. The nimble Vega-C can carry 2250 kg (or a hippopotamus) to this crowded zone, while the Ariane 62 can lift up to 10 300 kg (or an African elephant) and the mighty Ariane 64 a whopping 21 600 kg (or a small grey whale).
Linn Boldt-Christmas@nplinnspace.bsky.social · 2y ago

While grounded at Paris CDG airport due to the snow (!), I thought I’d take a minute to encourage any early career professionals in the space industry to apply to something very special: the IAC IPMC Young Professionals Workshop on Project Management. That sounds pretty dry, but let me explain 🔭🧵⬇️

Group photo from the 2024 IAF IAC IPMC YP Workshop Final Event which was held in Milan, Italy, in October 2024. The group is of ~50 people in business smart clothes and most are wearing lanyards of the events.
Julio@aprea.bsky.social · 2y ago

Twas the day before Christmas… Throwback to December 24, 2021 – just me, an Ariane 5 rocket, a day before the James Webb Space Telescope launch 🚀✨ Standing next to history in the making at the Guiana Space Centre. Any guesses what I was thinking at this moment? #Ariane5 #JamesWebb #SpaceChristmas

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Julio@aprea.bsky.social · 2y ago

Linn was one of the best YGTs that ever worked for ESA. Huge opportunity to hire her while dhe’s available! (YGT: Young Graduate Trainee - ESA: European Space Agency)

a woman with a big hairdo is singing and the words simply the best are above her

ALT: a woman with a big hairdo is singing and the words simply the best are above her

media.tenor.com

Linn Boldt-Christmas@nplinnspace.bsky.social · 2y ago

With so many new people coming to Bluesky now, I might just whisper: I am on the postdoc market! If you know anyone hiring in exoplanet atmosphere spectroscopy in ~fall 2025, esp. using ground based high R data, ideally w ambitions for rocky worlds studies, I’d be very grateful to hear from you! ✨🪐🔭

Me standing in front of the Very Large Telescope (VLT) at Paranal, Chile at sunset — of course wearing a red helmet because safety first!