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[NASA Webb Telescope @NASAWebb]

There are over 300 confirmed galaxies (and potentially hundreds more) gravitationally bound together in this galaxy cluster, shown by Webb. At its center are elliptical galaxies that dominate the cluster with their immense gravity.

https://t.co/KFnrNKU44z

[NASA's Kennedy Space Center @NASAKennedy]

T-12 hours until the launch of IMAP and its rideshares, SWFO-L1 and Carruthers! Be sure you don't miss a second of our coverage! 👇

🚀 Detailed countdown coverage right here on X!
🔴 Live launch broadcast on NASA+ & Amazon Prime
🛰 Mission blog: https://t.co/CDWsxLHnvR

[Don Pettit @astro_Pettit]

Starlink constellations are our most frequent satellite sightings from space station, appearing as distinct and numerous orbiting streaks in my star trail exposures.

[ARCHIVED: NASA's Exploration Ground Systems @NASAGroundSys]

Last week, teams completed stacking the interim cryogenic propulsion stage (ICPS) atop @NASA_SLS for the @NASAArtemis II mission. The ICPS is an in-space rocket stage that provides propulsion to @NASA_Orion during the first three Artemis missions.

Read more about the upper stage here: https://t.co/1F1nM79ssU

[NASA's Kennedy Space Center @NASAKennedy]

We’re getting ready to launch the Artemis II mission to the Moon. There’s just one thing missing…

A zero gravity indicator! This small plushie will demonstrate when the @NASA_Orion spacecraft reaches space. You can submit a design for the plushie here: https://t.co/SmU3aEiuPM

[NASA JPL @NASAJPL]

Monitoring Earth’s farmlands from space. 🌱

The upcoming NISAR satellite will be able to help farmers by providing detailed and timely data on crop growth, soil moisture, and plant health. https://t.co/g1JmCH9LVD

[NASA @NASA]

A double feature that's worth the wait: Two new missions—one to study more than 450 million galaxies, and another to observe the Sun's corona—are now targeted for liftoff Friday, Feb. 28. More on SPHEREx and PUNCH launch: https://t.co/H7u3XCJftF

[NASA Marshall @NASA_Marshall]

#NASAHubble has spotted a breathtaking spectacle of a supernova in the constellation Gemini, offering a rare glimpse into the explosive death of a massive star. 🌟

Learn more about this cosmic event that illuminates our understanding of the universe >> https://t.co/SKGoEziSWT

[NASA @NASA]

For an update on our Mars Sample Return Program to bring scientifically selected samples back to Earth, tune in Tuesday, Jan. 7, at 1pm ET (1800 UTC) as @SenBillNelson and @NASAScienceAA provide details: https://t.co/r2qY1tDHu1

[Don Pettit @astro_Pettit]

Homework problem for engineers, physics students, and various Uber-Geeks:
The bright metal object in my hands is a 373.3kg (821.2 lbm) counter weight on @space_station. The facing side is 22.2cm (8.75 inches) wide. Calculate my mass. Post answers in questions.

[Cady Coleman @Astro_Cady]

#OTD 11/21/2022: 🚀 The #Orion #spacecraft soared past the Moon! @NASA's #Artemis1 mission performed its first powered lunar flyby, zooming just 81 miles above the lunar surface:
https://t.co/A2xgGiXzsv
@NASAArtemis #Artemis #SpaceExploration

[NASA Marshall @NASA_Marshall]

Lane Polak had always dreamed of becoming an author, but he never imagined that dream would lead him to a career with the @NASA_SLS team at #NASAMarshall.

Celebrate #NationalAuthorsDay and learn about Lane's @NASAArtemis children’s book >> https://t.co/uYmtZIYNHt

[NASA Marshall @NASA_Marshall]

Several @NASA inventions that our #NASAMarshall workforce had a hand in supporting were named among TIME’s Inventions of 2024.

Learn more about these innovative technologies that are exploring the unknowns of space and benefiting humanity on Earth >> https://t.co/xtR2HeI3v1

[Don Pettit @astro_Pettit]

Creating planets. I was goofing around with my Science of Opportunity efforts and created a Jupiter-like planet out of water and food coloring. With Halloween coming up, I am going to see about making a Jack-o’-lantern. Stay tuned.

[Alison Steinberg @alisonintheknow]

Roscoe & Ramses: Marked safe from Haitian illegals ✅

[Cybertruck @cybertruck]

First Cybertrucks to venture from Florida to the end of the road at the Arctic Ocean – 5,500 miles one way

[ARCHIVED: NASA LSP @NASA_LSP]

🚀 Let us take you on an ESCAPADE! 🎵

NASA & @blueorigin are targeting NET Oct. 13 for the launch of the ESCAPADE mission to study Mars’ magnetosphere. The first launch of the #NewGlenn rocket will lift off from SLC 36 at Cape Canaveral Space Force Station in Florida.

Let’s GO!

[NASA @NASA]

Our @NASAPersevere rover is about to start the next stage of its Mars mission—a monthslong climb up the western rim of Jezero Crater: https://t.co/4ilhc101Qn

[NASA's Kennedy Space Center @NASAKennedy]

#Crew9 launch date announcement!

@NASA and @SpaceX are targeting no earlier than Sunday, Aug. 18, for the @Commercial_Crew launch to @Space_Station from Launch Complex 39A aboard a Falcon 9 rocket and Dragon spacecraft.

[Sean Kelly @seanpk]

Elon Musk open-sourced all of Tesla's patents for other car companies to copy.

Wall Street called it 'dumb' and thought Tesla will be crushed.

Elon was right. Everyone was wrong.

Every entrepreneur needs to understand why he did it and why it worked:🧵