Kathrin

Die letzte Woche gestartete #Esa Mission #Biomass, die die Wälder der Erde beobachten soll, hat jetzt ihre riesige Antennenschüssel mit einem Durchmesser von 12 m entfaltet. Ziemlich beeindruckend das Ding! 😳

Mehr bei der Esa (auf Englisch, aber mit tollem Gif, das zeigt, wie die Antenne entfaltet wird): esa.int/Applications/Observing

#Raumfahrt #Weltraum

Dr. Victoria Grinberg

We hired ten new ESA Research Fellows in space science

Super excited to have been the hiring manager for this amazing cohort. Can't wait to see all the amazing science they will do!

esa.int/ESA_Multimedia/Images/

#ESA #astrodon

Research Fellows in space science 2025

www.esa.int
Starry Time Podcast

This is Messier 82 -- a starburst galaxy located in the #constellation #UrsaMajor

We talked about this very starburst galaxy in our #astronomy episode on the Ursa Major constellation here: starrytimepodcast.podbean.com/

We also explored the #lore and #mythology of the two Ursa constellations here: starrytimepodcast.podbean.com/

📷 : esahubble.org/images/heic0604a

#astrodon #astrophotography #hubble #ESA #NASA #Science #space #Mythology #StarLore

May 07, 2025, 23:31 · · · 0 · 0
EduINAF

Grazie INTEGRAL (seconda parte)

https://edu.inaf.it/approfondimenti/scoperte/grazie-integral-seconda-parte/

Lavoro, sogni, paure e scoperte di una scientist on duty: appunti di viaggio molto personali di Adamantia Paizis, una delle scienziate del rivoluzionario satellite INTEGRAL, recentemente dismesso.

#astrofisica #ESA #IASFMIlano #INTEGRAL #lampiDiRaggiGamma #raggiX #satelliti

grobi

The black hole’s extreme gravitational field redirects and distorts light coming from different parts of the disk, but exactly what we see depends on our viewing angle. The greatest distortion occurs when viewing the system nearly edgewise.

As our viewpoint rotates around the black hole, we see different parts of the fast-moving gas in the accretion disk moving directly toward us. Due to a phenomenon called "relativistic Doppler beaming," gas in the disk that's moving toward us makes that side of the disk appear brighter, the opposite side darker. This effect disappears when we're directly above or below the disk because, from that angle, none of the gas is moving directly toward us.

When our viewpoint passes beneath the disk, it looks like the gas is moving in the opposite direction. This is no different that viewing a clock from behind, which would make it look like the hands are moving counter-clockwise.

CORRECTION: In earlier versions of the 360-degree movies on this page, these important effects were not apparent. This was due to a minor mistake in orienting the camera relative to the disk. The fact that it was not initially discovered by the NASA scientist who made the movie reflects just how bizarre and counter-intuitive black holes can be!

Credit: NASA’s Goddard Space Flight Center
Jeremy Schnittman (NASA/GSFC)
Scott Wiessinger (USRA)
Francis Reddy (University of Maryland College Park)
Francis Reddy (University of Maryland College Park)

>>svs.gsfc.nasa.gov/13326#sectio

#space #blackhole #astrophysics #astrophotography #photography #astronomy #science #nature #NASA #ESA

Toadlyturtle

#Indigenous #Latina family #homeless over a year $674 need by 11AM ET for hotel #SabiLewSounds is 24/7 disabled caretaker for #elderly mom & #ESA #bunny; multidisciplinary #artist & #musician; #mentalhealth & #disability #advocate KOFI/PP SabiLewSounds CA/VM toadlyturtle (NOTE: SABI) #MutualAid

Bluesky

Bluesky Social
grobi

General_relativity

General relativity, also known as the general theory of relativity, and as Einstein's theory of gravity, is the geometric theory of gravitation published by Albert Einstein in 1915 and is the current description of gravitation in modern physics. General relativity generalizes special relativity and refines Newton's law of universal gravitation, providing a unified description of gravity as a geometric property of space and time, or four-dimensional spacetime. In particular, the curvature of spacetime is directly related to the energy and momentum of whatever is present, including matter and radiation. The relation is specified by the Einstein field equations, a system of second-order partial differential equations.

Newton's law of universal gravitation, which describes classical gravity, can be seen as a prediction of general relativity for the almost flat spacetime geometry around stationary mass distributions. Some predictions of general relativity, however, are beyond Newton's law of universal gravitation in classical physics. These predictions concern the passage of time, the geometry of space, the motion of bodies in free fall, and the propagation of light, and include gravitational time dilation, gravitational lensing, the gravitational redshift of light, the Shapiro time delay and singularities/black holes. So far, all tests of general relativity have been shown to be in agreement with the theory. The time-dependent solutions of general relativity enable us to talk about the history of the universe and have provided the modern framework for cosmology, thus leading to the discovery of the Big Bang and cosmic microwave background radiation. ..
>> en.wikipedia.org/wiki/General_

* relatively related:
en.wikipedia.org/wiki/Kerr_met
en.wikipedia.org/wiki/Penrose_
physicsopenlab.org/2017/09/07/

* Credits: Wikimedia Commons

#space #blackhole #astronomy #science #nature #NASA #ESA

May 04, 2025, 10:06 · · · 1 · 0