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#astronomy

541 posts338 participants74 posts today
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Josh Universe :goldverify:

Blue Origin Concludes New Glenn Flight Investigation

Summary: Blue Origin concluded its investigation into the New Glenn rocket booster landing failure, collaborating with the FAA, which accepted their findings and proposed action plan. The objective is to enhance propulsion system functionality. A second launch is planned for late spring 2025.

Read More: https://blog.joshuniverse.com/blue-origin-concludes-new-glenn-flight-investigation

@science@lemmy.world @space@lemmy.world @science@lemmy.ml @space@newsmast.community @space@lemmy.ml #space #science #nasa #astronomy

Josh Universe · Blue Origin Concludes New Glenn Flight InvestigationBlue Origin resolves New Glenn rocket booster landing failure, plans next launch in Spring 2025 with FAA-approved corrective actions.
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Astro Hawk (Ian Kluft) 🚀🛰️

"James Webb telescope takes emergency look at 'city-killer' asteroid 2024 YR4 ahead of close encounter in 2032" by @LiveScience - #NASA #JWST observations confirm #asteroid #2024YR4 will not impact Earth on the Dec 22, 2032 fly-by. An impact on the #Moon🌒 is still not ruled out. Another JWST observation is scheduled for May before the rock disappears into the dark outer solar system for several years. livescience.com/space/asteroid #astronomy #PlanetaryDefense #PlanetaryDefence #LowFlyingRocks #space

Live Science · James Webb telescope takes emergency look at 'city-killer' asteroid 2024 YR4 ahead of close encounter in 2032By Brandon Specktor
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Richard

“We really shouldn’t have found a galaxy like this, given our current understanding of how the universe evolved. Imagine the early universe wrapped in a thick fog, making it extremely hard to detect strong beacons shining through it. Yet here we see this galaxy’s beam piercing through the veil.”

A New Cosmology Mystery: James-Webb Telescope Observes a Galaxy It Shouldn’t!
dailygalaxy.com/2025/03/a-new-

Jades Gs Z13 1 Galaxy
The Daily Galaxy - Great Discoveries Channel · A New Cosmology Mystery: James-Webb Telescope Observes a Galaxy It Shouldn’t!A distant galaxy has just turned up in James Webb's lens—far too bright and far too early. Its ultraviolet glow cuts through a universe that should have been dark and opaque.
#JWST#astronomy#cosmology
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Gravity Grinch

These results raise the question where we can track down dark matter? What do we know in the least model-dependent way?
For strong lensing, the question has an answer, look at this video for a recent summary:
youtu.be/5FyaoYsCSVg?si=zmokA8

youtu.be- YouTubeEnjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.
#astrophysics#astronomy#StrongGravitationalLensing
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Gravity Grinch

2) the Bullet cluster is a more complicated structure than a binary system of two big dark-matter clumps that are offset to the baryons:
arxiv.org/abs/2503.21870
Masses were reduced and bounds on SIDM were set. Looks like we need less dark matter if the structure is more complex!

...and there is also a method to constrain dark matter properties purely from the multiple images, see this NASA press release for more:
science.nasa.gov/missions/hubb

Hubble
NASA Science · ‘Double’ Galaxy Mystifies Hubble AstronomersBy NASA Hubble Mission Team
#astrophysics#astronomy#StrongGravitationalLensing
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Richard

Many Protoplanetary Disks Aren't Much Bigger Than Earth's Orbit
universetoday.com/articles/man

"'The observations also show that these compact discs could have optimal conditions for the formation of so-called super-Earths, as most of the dust is close to the star, where super-Earths are typically found', Sanchez said. Super-Earths are similar to Earth in many ways, but can be up to ten times more massive than our home world. This could explain why low-mass stars seem to have so many super-Earths and why they're the most common type of planet in the Universe.

In contrast, stars with larger disks seem to produce more Jupiter- and Saturn-sized worlds, but no super-Earths. So, what does that say about our Solar System? The team's survey seems to imply that our collection of planets was born in a large protoplanetary disk. That's because we have Jupiter and Saturn and we only have a 'regular-sized' Earth. 'This research provides a fascinating link between the sizes of observed planets and the sizes of observed protoplanetary disks,' said van der Marel, also of Leiden Observatory."

#astronomy#Astrodon
Public
Josh Universe :goldverify:

NASA Astronauts Endorse Boeing Starliner Future

Summary: NASA astronauts Butch Wilmore and Suni Williams are optimistic about Boeing's Starliner despite past technical issues. Their 286-day mission faced delays due to thruster failures, yet they remain committed to overcoming challenges and enhancing future space exploration efforts.

Read More: https://blog.joshuniverse.com/nasa-astronauts-endorse-boeing-starliner-future

@science@lemmy.world @space@lemmy.world @science@lemmy.ml @space@newsmast.community @space@lemmy.ml #space #science #nasa #astronomy

Josh Universe · NASA Astronauts Endorse Boeing Starliner FutureNASA astronauts discuss challenges and promise of Boeing's Starliner capsule after prolonged space mission, aiming for future improvements.
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