LastNerdOnPlanetEarth
Joined October 2017
- Tweets14.8K
- Following713
- Followers192
- Likes72.8K
Justin Case retweeted
Now that @NASARoman has launched, it’s on its way to beginning its science mission: surveying billions of galaxies, discovering new worlds, and helping scientists investigate mysteries like dark matter and dark energy.
Hear from Roman Project Scientist Julie McEnery.
Justin Case retweeted
#Origami-inspired paper spacecraft may offer a sustainable alternative to metal satellites, burning up on re-entry without leaving harmful debris or chemicals in Earth's atmosphere. doi.org/g9s589 phys.org/news/2025-07-paper-…
Justin Case retweeted
Evaporation, condensation, precipitation on my mind. This is the (methane?!) cycle, and it happens all the time! 🎶
Webb provided evidence for cloud convection on Saturn’s moon Titan, the only other place in our solar system with weather like Earth!
go.nasa.gov/42UZha8
ALT A three-panel graphic showing infrared images of Saturn's moon Titan. The leftmost image shows a mottled globe of brown and yellow with a hazy blue edge. The middle and right images show a dark orange globe with a brighter edge and bright spots near the top and bottom.
Justin Case retweeted
Astronomers used @NASAHubble to study the movements of stars in the Draco dwarf galaxy over 18 years.
The linked 👇 research aimed to understand dark matter distribution within the galaxy. The team's findings suggest a "cusp-like" dark matter structure, aligning with cosmological models.
Their analysis combined line-of-sight velocities and proper motions to create a detailed 3D model of stellar movements. This methodology, applied to other galaxies like Sculptor and Ursa Minor, could advance dark matter research.
👉 iopscience.iop.org/article/1…
Justin Case retweeted
Attention #GaiaData users. The Gaia Archive and some other Gaia systems will experience an extended downtime between 18 April 16:30 CEST and 23 April 08:30 CEST. Gaia data always remains accessible though thanks to our partner data centres: cosmos.esa.int/web/gaia/data… !
Justin Case retweeted
The universe is expanding. To understand the expansion speed, we look to stars in distant galaxies and the afterglow of the big bang. @NASAWebb confirmed 30 years of @NASAHubble's data, deepening a mystery: Why is the universe expanding so fast? go.nasa.gov/3P9xx9q
ALT A Webb and Hubble composite image of galaxy NGC 5584. The galaxy has a bright white core, and several large spiral arms extending out from that core, rotating clockwise. The arms are light blue with many pink speckles and clumps littering the arms. Scattered across the picture are red blobs of varying sizes. The background is largely black but has a smattering of tiny red dots.
Justin Case retweeted
Attention #GaiaData users! Find Gaia DR3 software tools here: cosmos.esa.int/web/gaia/dr3-… with the GaiaXPy tool to use with Gaia BP/RP spectra, tools for use with the astrophysical parameters, tools for use with non-single stars, and many tutorials on DataLink.
Justin Case retweeted
Timelapse of Europa & Io orbiting Jupiter, shot from space probe Cassini
Original video by NASA-JPL’s Kevin Gill: flickr.com/photos/kevinmgill…
Justin Case retweeted
When your children ask ‘why is engineering important?’, show them this video xitter.cf/Elzo_/status/145594993…