Before flying around the Moon on Artemis II, the crew will spend countless hours training in the Orion Mission Simulator. Grace Lauderdale leads the team behind the simulator, helping the crew and flight control team rehearse every phase of the mission: https://t.co/q7hONT8Doa

Moon Tree's Second Christmas🎄 Our ‘Moon Tree’ seedling that flew around the Moon on the @NASAArtemis I mission is celebrating its second holiday season at #NASAMarshall. They really do grow up fast! Learn more about the Artemis Moon Trees >> https://t.co/XY5sl43V1c

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Practice, practice, practice! This weekend, teams completed the Countdown Demonstration Test for Artemis II. Launch controllers and the flight crew practiced timelines, procedures, and communications to prepare for launch day. https://t.co/hPTcqN5OX3

How do you ensure a spacecraft will survive the trip to space? With careful testing, of course. The latest subject for testing in JPL’s Environmental Test Laboratory is a full-scale model of Firefly Aerospace’s Blue Ghost Mission 2. Learn more: https://t.co/UTnEbSN2YI

Countdown tests during the weekend! The Artemis II astronauts have been putting in hours over the weekend, practicing all the steps leading up to the launch of their upcoming mission around the Moon — including suit up.

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Teams at NASA Kennedy spent 2025 preparing the launch vehicle and its powerhouse SLS rocket to launch four astronauts around the Moon for Artemis II in early 2026. Read about some of the other milestones we accomplished in 2025: https://t.co/0sTsBSsHzY

The Artemis II crew will observe parts of the Moon never before seen by human eyes. Their exact view will depend on lunar surface lighting (aka the Moon's phase) as they fly by, which in turn depends on launch timing. Dive in with Ernie Wright, Artemis II Visualization Lead.

Extremely successful day in our spacecraft #Integrity - did everything go perfectly? Absolutely not. But this vehicle and our team showed us they’re up to the challenge. Launch is getting very close.

One step closer!🌖 Today, @NASAArtemis II crew participated in a launch day rehearsal, called a countdown demonstration test. The activity simulated the launch day timeline, including the crew suiting up in their spacesuits and climbing in and out of their spacecraft.

On the eve of our countdown demonstration test, we paid homage to the Apollo 1 crew. Moving, somber, necessary.

Power on for Gateway’s powerhouse. The Power and Propulsion Element for Gateway powered on for the first time. Gateway will support missions between lunar orbit and the Moon’s surface. Learn more about Gateway: https://t.co/JnhPO4nIwR

Today, Jared Isaacman (@NASAAdmin) was sworn in as NASA’s 15th Administrator. At a time of intense competition across the last frontier, he will lead the most talented minds in the nation to ignite the orbital economy, usher in world-changing scientific discovery, and return

And you thought it was hard to scroll through all the photos on your phone... NASA’s Mars Reconnaissance Orbiter has snapped its 100,000th image of the surface with its HiRISE camera. More on this milestone image: https://t.co/71CuPgO1Ep

A freshly painted NASA’s Artemis logo is unveiled on the White Room connected to the crew access arm inside the Vehicle Assembly Building at NASA’s Kennedy Space Center. The White Room is the last stop for the Artemis II crew before they enter the Orion spacecraft ahead of

This year, we made progress toward the @NASAArtemis II test flight around the Moon, celebrated 25 years of continuous presence on the @Space_Station, and flew the X-59 for the first time. That's just a sample of what we’re doing to lead in exploration and innovation:

How does the Moon's surface react to propulsion systems? @NASA_Langley has begun a series of tests that will help us understand the hazards that may occur when an Artemis lander kicks up lunar dust, soil, and rocks: https://t.co/1kFO7neOpQ

The @NASAArtemis II launch is just around the corner!🚀 Join this historic mission around the Moon by signing up to be a virtual guest at the launch. Be sure to select the Artemis II STEM Learning Pathway add-on to get the mission resource newsletter! https://t.co/0y8UCZX4wi

As the launch of the Artemis II mission draws nearer, the crew and backup crew are busier than ever. Last week included challenging entry simulations, blood sampling, and collecting data to prepare Artemis III astronauts to walk on the lunar surface.

Before our Artemis II astronauts lift off on their journey around the Moon next year, find out what it takes to build a mission like theirs from the ground up. Episode 1 of Moonbound is live—and free to watch on NASA+: https://t.co/Is3l2PRkBk

This year, skip the socks and give them a trip to space (kind of). Submit your loved one’s name to be flown aboard the Artemis II mission, print the boarding pass, and tuck it into their stocking for a next-level holiday surprise! https://t.co/CntR4T7560