John Grunsfeld (@sciastro) 's Twitter Profile
John Grunsfeld

@sciastro

Former lead for Science at NASA (Associate Administrator) Astronaut STS-67,81,103,109,125 Hubble Hugger, Space and Earth explorer

ID: 484991854

linkhttp://go.nasa.gov/johngrunsfeld calendar_today06-02-2012 18:22:45

853 Tweet

28,28K Followers

231 Following

Hubble (@nasahubble) 's Twitter Profile Photo

Twice the telescopes = twice as iconic 🤩 Take in these views from Hubble and NASA Webb Telescope, all featuring the star-forming region known as the Pillars of Creation. Both telescopes see in different wavelengths of light, so working together, we get a broader view of these pillars!

John Grunsfeld (@sciastro) 's Twitter Profile Photo

To my Twitter followers, friends, and colleagues in #Arizona -Please Please Please make sure and VOTE! I'm especially keen to see Senator Mark Kelly, a great person, patriot, pilot, engineer, and honest Senator, re-elected to the #Senate Godspeed Captain Mark Kelly

Dr. Graham Lau (@cosmobiologist) 's Twitter Profile Photo

Many of us in the space industry, from scientists and engineers, astronauts and Star Trek actors, and more will be speaking tomorrow night for @space4harris. Join me along with Bill Nye, Robert Picardo, Camille Bergin, Lauren Lyons, and others as we share our vision for where

Many of us in the space industry, from scientists and engineers, astronauts and Star Trek actors, and more will be speaking tomorrow night for @space4harris. 

Join me along with <a href="/BillNye/">Bill Nye</a>, <a href="/RobertPicardo/">Robert Picardo</a>, <a href="/TheGalacticGal/">Camille Bergin</a>, <a href="/Laur_Ly/">Lauren Lyons</a>, and others as we share our vision for where
John Grunsfeld (@sciastro) 's Twitter Profile Photo

Join SpaceCadets4Harris as we come together for the #UniteForAmerica livestream with Oprah Winfrey, Kamala Harris and @WinWithBlackWomen. Let’s raise our voices on Sept 19th at 8 PM ET. Register now at UniteForAmerica2024.com and make an impact!

John Grunsfeld (@sciastro) 's Twitter Profile Photo

Please join Lynda Carter, Stacey Abrams, and a cast of Star Trek actors, astronauts and other luminaries for "Geeks and Nerds for Harris" tomorrow night 24 September 8pm ET/5pm PT. Geeks.forHarris.org

Please join Lynda Carter, Stacey Abrams, and a cast of Star Trek actors, astronauts and other luminaries for "Geeks and Nerds for Harris" tomorrow night 24 September 8pm ET/5pm PT.  Geeks.forHarris.org
NASA Europa Clipper (@europaclipper) 's Twitter Profile Photo

It's one of the most intriguing locations for understanding the possibilities of extraterrestrial life. Learn more about why Jupiter's moon Europa fascinates scientists and explorers: europa.nasa.gov/why-europa/ove…

It's one of the most intriguing locations for understanding the possibilities of extraterrestrial life. Learn more about why Jupiter's moon Europa fascinates scientists and explorers: europa.nasa.gov/why-europa/ove…
John Grunsfeld (@sciastro) 's Twitter Profile Photo

Are we alone in the Universe? Today is game time for the Europa Clipper which can look for signs of life and habitability on this icy moon of Jupiter. Launch from pad 39A at Kennedy Space Center is an hour away. Go Clipper! science.nasa.gov/mission/europa…

John Grunsfeld (@sciastro) 's Twitter Profile Photo

I last launched from Pad 39A in 2009 aboard Space Shuttle Atlantis in 2009 to Hubble. Today a mission I helped to start, the ARCHIVED - NASA Europa Clipper, departs for Jupiter and its rendezvous with #Europa. Go Clipper! Watch here nasa.gov/live/

NASA Watch (@nasawatch) 's Twitter Profile Photo

FYI Greg Autry Greg Autry🚀 at UCF UCF Business ucfspacebiz really wants to be the next NASA Administrator. With #Project2025 & the #ScheduleF loyalty test how many people at #NASA will be defined in the same way? Is this any way to explore space? No. x.com/GregWAutry/sta…

FYI Greg Autry <a href="/GregWAutry/">Greg Autry🚀</a> at <a href="/UCF/">UCF</a> <a href="/UCFBusiness/">UCF Business</a> <a href="/ucfspacebiz/">ucfspacebiz</a> really wants to be the next <a href="/NASA/">NASA</a> Administrator. With #Project2025 &amp; the #ScheduleF loyalty test how many people at #NASA will be defined in the same way? Is this any way to explore space? No. x.com/GregWAutry/sta…