Simply incredible … 🌟
It's here–the deepest, sharpest infrared view of the universe to date: Webb's First Deep Field.
Previewed by @POTUS on July 11, it shows galaxies once invisible to us. The full set of @NASAWebb's first full-color images & data will be revealed July 12: nasa.gov/webbfirstimages

ALT The background of space is black. Thousands of galaxies appear all across the view. Their shapes and colors vary. Some are various shades of orange, others are white. Most stars appear blue, and are sometimes as large as more distant galaxies that appear next to them. A very bright star is just above and left of center. It has eight bright blue, long diffraction spikes. Between 4 o’clock and 6 o’clock in its spikes are several very bright galaxies. A group of three are in the middle, and two are closer to 4 o’clock. These galaxies are part of the galaxy cluster SMACS 0723, and they are warping the appearances of galaxies seen around them. Long orange arcs appear at left and right toward the center.
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Greg Mack retweeted
Our #Astro2020 decadal survey outlines the key challenges and opportunities for astronomy and astrophysics in the next decade.
Visit our new resource page for an overview of the report: ow.ly/Q1NB50GFe1g
Greg Mack retweeted
Beautiful scrolling interactive webpage of the main #Astro2020 recommendations: nap.edu/resource/26141/inter…
Download the #Astro2020 report:
nap.edu/26141
Greg Mack retweeted
What are the key scientific challenges for astronomy and astrophysics in the next decade? Join us for a public briefing on the #Astro2020 decadal survey on Nov 4 at 2pm EDT.
Register: ow.ly/i6OB50GzsMC
Greg Mack retweeted
And another look behind me. Welcome to Jezero Crater. #CountdownToMars
Greg Mack retweeted
Hello, world. My first look at my forever home. #CountdownToMars
Greg Mack retweeted
Colorized versions of the screen captures of @NASAPersevere's first images after its successful landing on Mars #CountdownToMars
Greg Mack retweeted
I’m safe on Mars. Perseverance will get you anywhere.
#CountdownToMars
Greg Mack retweeted
Slack Wyrm #678
joshuawright.net
Greg Mack retweeted
Biden announced he will make the director of the White House Office of Science and Technology Policy a Cabinet-level position for the first time in U.S. history.
axios.com/biden-white-house-…
Woah!!
Beneath quartz rocks in the California desert, something unexpected was hiding nyti.ms/3jZVWOE
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Greg Mack retweeted
Beneath quartz rocks in the California desert, something unexpected was hiding nyti.ms/3jZVWOE
Greg Mack retweeted
Video by winterover Geoff Chen of SPT observing this week! The #southernlight #Aurora are pretty amazing, especially the flare up at the end! Also fun to watch the #MilkyWay move across the sky during the movie! #southpole #Antarctica
Greg Mack retweeted
The Atacama Cosmology Telescope @ACT_Pol measures the Hubble constant using the cosmic microwave background to be 68 km/sec/Mpc. That's in agreement with the Planck satellite, and disagreement with direct measurements. A mystery!
nature.com/articles/d41586-0…
Greg Mack retweeted
The James Webb Space Telescope has a new target launch date: Oct. 31, 2021🎃🦇 — This is about a half-year delay from its previous target, caused by COVID-19-related disruptions. @NASA states the nearly $10 billion mission will require no additional funds.
nasa.gov/press-release/nasa-…
Greg Mack retweeted
Starfleet is a promise. Nobody gets left behind.
For every person who tweets #StarTrekUnitedGives today, $1 will be donated to support the Black Lives Matter movement.
Learn more about #StarTrekUnited donations and free Star Trek marathons here: bit.ly/StarTrekUnitedInfo
Greg Mack retweeted
“What we do on our Star Trek worlds is really a mirror to what we should be doing in our daily society.” - @ItsMichelleHurd #StarTrekUnited
Greg Mack retweeted
BREAKING: US Supreme Court rules that existing federal law forbids job discrimination on the basis of sexual orientation, a major victory for advocates of gay rights. nbcnews.to/2AtgwoH
Greg Mack retweeted
BREAKING: The Supreme Court has delivered a historic victory for LGBTQ people — ruling that the federal law that bars sex discrimination in employment does apply to LGBTQ employees.
Greg Mack retweeted
On our street, we accept all, we love all, and we respect all. Happy #PrideMonth!

























