Brian Grefenstette (@thebriangref) 's Twitter Profile
Brian Grefenstette

@thebriangref

I clearly don't post here anymore. briangrefenstette.com Scientist, astronomer, sometimes writer. Tweets here are my own. He/him.

ID: 14344111

linkhttp://briangrefenstette.com calendar_today09-04-2008 18:30:45

3,3K Tweet

271 Followers

608 Following

Brian Grefenstette (@thebriangref) 's Twitter Profile Photo

For those needing some cool new wall art, here's an amazing poster that was produced for NuSTAR's 10th launchaversary last year: exoplanets.nasa.gov/resources/2323…

NASA Universe (@nasauniverse) 's Twitter Profile Photo

#OTD in 2012, our NuSTAR observatory launched into space! The telescope continues unlocking the mysteries of X-ray sources throughout the universe. To celebrate, let’s look at some recent mission discoveries! ⬇️ Download this colorful poster here: go.nasa.gov/43E699R

#OTD in 2012, our NuSTAR observatory launched into space! The telescope continues unlocking the mysteries of X-ray sources throughout the universe. To celebrate, let’s look at some recent mission discoveries! ⬇️

Download this colorful poster here: go.nasa.gov/43E699R
Jonathan McDowell (@planet4589) 's Twitter Profile Photo

GREAT NEWS! From the latest JAXA briefing: Solar panels deployed, nominal voltage seen, sun acquired, initializing thrusters and reaction wheels. XRISM LAUNCH SUCCESS!!! Congratulations JAXA

Chandra Observatory (@chandraxray) 's Twitter Profile Photo

For the first time scientists have combined the powers of NASA's Chandra & Webb Space Telescopes to study the famous supernova remnant Cassiopeia A, helping to solve the mystery behind the remnant's "Green Monster": s.si.edu/casa24 #AAS243

For the first time scientists have combined the powers of <a href="/NASA/">NASA</a>'s Chandra &amp; Webb Space Telescopes to study the famous supernova remnant Cassiopeia A, helping to solve the mystery behind the remnant's "Green Monster": s.si.edu/casa24 #AAS243
Brian Grefenstette (@thebriangref) 's Twitter Profile Photo

This is from the catwalk hallway that separates the various meetings rooms looking down at the expo hall. Definitely getting my steps in this week. #AAS243

This is from the catwalk hallway that separates the various meetings rooms looking down at the expo hall. Definitely getting my steps in this week. #AAS243
ESA Webb Telescope (@esa_webb) 's Twitter Profile Photo

🆕 The Royal Astronomical Society has awarded the 2024 Group Achievement Award in Astronomy to the team responsible for designing and building Webb’s MIRI instrument! 🎉 Read more: esawebb.org/announcements/… or 🧵👇

🆕 The <a href="/RoyalAstroSoc/">Royal Astronomical Society</a> has awarded the 2024 Group Achievement Award in Astronomy to the team responsible for designing and building Webb’s MIRI instrument! 🎉 Read more: esawebb.org/announcements/… or 🧵👇
Dr. Nicky Fox (@nasascienceaa) 's Twitter Profile Photo

We’ve selected a new NASA Universe mission! UVEX — UltraViolet Explorer — will conduct a deep survey of the whole sky in two bands of ultraviolet light, providing new insights into galaxy evolution and the lifecycles of stars. Congratulations to Principal Investigator, Fiona