Ellen Ochoa

After overnight data showed an interruption in helium flow in the SLS interim cryogenic propulsion stage, teams are troubleshooting and preparing for a likely rollback of Artemis II to the VAB at @NASAKennedy. This will almost assuredly impact the March launch window. @NASA will continue to provide updates as they become available.

We are targeting no earlier than March 6 for the launch of Artemis II, pending completion of required work at the launch pad and analysis of test data. The Artemis astronauts have entered quarantine to remain in good health before the mission. go.nasa.gov/4s2XFVA

On the one hand, very difficult and disappointing to read; on the other hand, kudos to @NASAAdmin for his transparency and commitment to mission and crew

"Celebrates Eileen Collins’ groundbreaking work in space” (Variety) Spaceflight pioneer Eileen Collins is the star of acclaimed new doc SPACEWOMAN. Lands in US theaters MARCH 20, with in-person Q&As in select cities. Visit spacewoman.film to learn more about our film.

Made it. At 6:42pm ET on Jan. 17, the stacked Artemis II rocket and spacecraft reached Launch Pad 39B after a nearly 12-hour journey from the Vehicle Assembly Building at @NASAKennedy in Florida.

Great photo! The Artemis II stack is on its way to the launch pad.

I had the pleasure of visiting Mission Control at Johnson Space Center during the Crew-11 reentry and splashdown operation. The flight controllers, alongside the rest of the NASA team and our partners, represent the most accomplished space agency in the world. When exploring the unknown, we prepare for the unexpected and the teams executed professionally. We can bring our astronauts home at virtually any time and pull forward the next mission as necessary. We will always debrief and capture lessons learned, but I am incredibly proud of the team. This is 'tough and competent'. This is NASA at its finest. Next up: Crew-12 and Artemis II.

Five years later, the attack on the Capitol on January 6th, 2021, remains a stain on our nation's history. It was an assault on the very foundation of our democracy – the right for Americans to choose their leaders. It should be a lasting reminder that we cannot take America for granted. Now more than ever, it's important that all Americans stand together to protect and strengthen our democracy.

Over twenty-five years in the U.S. Navy, thirty-nine combat missions, and four missions to space, I risked my life for this country and to defend our Constitution – including the First Amendment rights of every American to speak out. I never expected that the President of the United States and the Secretary of Defense would attack me for doing exactly that. My rank and retirement are things that I earned through my service and sacrifice for this country. I got shot at. I missed holidays and birthdays. I commanded a space shuttle mission while my wife Gabby recovered from a gunshot wound to the head– all while proudly wearing the American flag on my shoulder. Generations of servicemembers have made these same patriotic sacrifices for this country, earning the respect, appreciation, and rank they deserve. Pete Hegseth wants to send the message to every single retired servicemember that if they say something he or Donald Trump doesn’t like, they will come after them the same way. It’s outrageous and it is wrong. There is nothing more un-American than that. If Pete Hegseth, the most unqualified Secretary of Defense in our country’s history, thinks he can intimidate me with a censure or threats to demote me or prosecute me, he still doesn’t get it. I will fight this with everything I’ve got — not for myself, but to send a message back that Pete Hegseth and Donald Trump don’t get to decide what Americans in this country get to say about their government.

Congratulations to Aileen Lee — an exciting day for the @MooreFound !

LIVE: Soyuz MS‑27 landing in Kazakhstan. Join us live as @NASA astronaut Jonny Kim and the crew aboard Soyuz MS‑27 return to Earth, with landing scheduled for approximately 12:04 a.m. ET. x.com/i/broadcasts/1…

For the first time ever, all spacecraft ports at the space station are full with 8 docked vehicles as 10 crewmembers conduct cutting-edge science in orbit. The station will shift to a seven-person crew next week as a Soyuz trio returns to Earth. nasa.gov/blogs/spacesta…

Thankful for a safe arrival of the latest crew to @Space_Station

RETWEET

This month marks a milestone in human achievement: 25 years of continuous human presence on the International Space Station. For a quarter century, the ISS has been a symbol of global cooperation and a platform for research that transforms life on Earth. More than 290 astronauts have supported 4,000+ experiments, driving breakthroughs in medicine, materials, and technologies that benefit humanity. Since 2011, the ISS National Laboratory®, managed by CASIS®, has enabled researchers to leverage this unique environment for discoveries that advance healthcare, industry, and the future of space exploration. Read the full press release: ow.ly/vCzV50Xn5nT Innovation in orbit. Impact on Earth. #ISS25 #Innovation #GlobalCollaboration #researchinspace

This Hispanic Heritage Month may not have felt the same for a lot of folks as Trump continues trying to inject fear into Latino communities and target hardworking people who have built their lives in this country. These communities are resilient. And now more than ever, it’s important to stand with them in the face of this administration's attacks.

We’re excited to announce the 2025 cohort of the Experimental Physics Investigators – a distinguished group of 22 mid-career researchers pushing the boundaries of experimental physics! na2.hubs.ly/H01tdJf0 #MoorePhysics #SciencePhilanthropy

.@NASA’s 10 new astronaut candidates were introduced Monday following a competitive selection process of more than 8,000 applicants from across the United States. go.nasa.gov/4n9J9Jq

Meet our new class of future astronauts! On Monday, Sept. 22, we're introducing our 2025 class of astronaut candidates, selected from over 8,000 applications. Tune in at 12:30 p.m. EDT (1630 UTC) for the reveal: youtu.be/frX3-5xuGQs

A view from orbit on September 11, 2001. A day of unimaginable loss. We will always remember.