Dr. Raphael Marschall
banner
spacemarschall.net
Dr. Raphael Marschall
@spacemarschall.net
#asteroids #comets #protoplanetarydisks #planetaryScience 🧪🔭🚀🛰️☄️
Science Programme Manager @issibern.ch. Co-I of ESA's Comet Interceptor, collaborator on NASA's Lucy and ESA's Rosetta missions.
www.spaceMarschall.net
(he/him)🇨🇭🇺🇸🇫🇷
I love the Psyche mission trajectory and made an interactive dashboard to examine it on www.whereis.space/psyche/
May 4, 2025 at 1:11 PM
A time-lapse of some images of asteroid (52246) Donaldjohanson during the encounter by Lucy!

Images taken on April 20, 2025, from a distance of 1,600 to 1,100 km.

Credit: NASA/Goddard/SwRI/Johns Hopkins APL

science.nasa.gov/image-articl...

#PlanetSci #SciComm 🧪
April 21, 2025 at 6:48 PM
Some key numbers about the encounter:
↔️ closest approach distance: 960 km
⏩ encounter speed: 13.4 km/s
🌍 distance from Earth: 1.5 AU (223 million km, 12 light-minutes)
☀️ inbound phase angle: 14° (E-1d)
☀️ outbound phase angle: 165° (E+1d)

▶️ Animation from www.whereIsLucy.space sped up by 500x

🧵 4/6
April 18, 2025 at 5:47 PM
🚨 Two days to Lucy's encounter with asteroid Donaldjohanson (DJ) 🚨

NASA's Lucy spacecraft will fly by DJ on Sunday, April 20, 2025 at 17:51 UTC (2:51 a.m. JST/10:51 a.m. PDT/11:51 a.m. MDT/1:51 p.m. EDT/19:51 CEST).

You can follow the encounter on whereIsLucy.space

🧵 1/6
#PlanetSci #SciComm
April 18, 2025 at 5:42 PM
That's great news! 🎉 And Juice is almost seven light minutes from Earth right now.

I've built a dashboard to follow and examine the Juice trajectory on whereis.space/juice/
January 14, 2025 at 10:10 AM