To Stand On A Comet

astrophysics-georg - i know way too much about this

To Stand on a Comet

This footage was taken by ESA Rosetta probe on the Comet 67P/Churyumov-Gerasimenko.

The snow fall is in fact a number of things, firstly the background stars moving as the comet rotates, secondly the zippy streaks are in fact cosmic rays and then there is dust moving about too, so none of it snow !

astrophysics-georg - i know way too much about this

More Posts from Astrophysics-georg and Others

2 years ago
Neptune's Rings
Neptune's Rings

Neptune's rings

2 years ago

The first JWST image is creating quite a buzz around gravitational lensing because of the sheer amount of it in the image. Gravitational lensing makes galaxies appear warped like these:

A very small section from Webb's first Deep Space. The background is black space and a few galaxies and stars are scattered across it. The focus is on a red-orange galaxy that is warped and appears to stretch down in an arc which then stretches into a mirror image of the same galaxy.
A very small section from Webb's first Deep Space. The background is black space and a few galaxies are scattered across it. The focus is on a yellow-orange galaxy that is warped. It is elongated, bulbous on both ends and squeezed in the middle. The squeezed part arcs around a large, white spot.

Because spacetime curves around a massive body, light bends when it's near enough a massive object, allowing us to see very distant galaxies behind the cluster we're looking at.

An illustration on a black background. Around halfway it is divided horizontally. The lower half is a blue grid with straight lines except for the center, where it appears like fabric being weighed down. In this spot a couple of white dots represent a galaxy cluster. To the left of that and slighty up so it sits above the horizontal line is a white swirl representing a galaxy. Towards the right of the cluster and slightly down (but not weighing down the grid) is a circle representing Earth. Several white lines are drawn from the galaxy on the far left in the direction of the Earth. They represent disoriented light rays and are slightly bent around the galaxy cluster. Two red lines are bent around the galaxy cluster and meet again on the other side hitting Earth. Where the red lines are at the same level with the galaxy cluster they are labelled "lensed galaxy images". The graphic represents light rays from a distant galaxy being bent around a galaxy cluster due to its massive gravity which bends space time and some of those light rays being bent just the right way to reach Earth, creating a distorted image of the galaxy behind the cluster.

Here is some recommended reading on it if you wanna learn more:

Gravitational Lensing
HubbleSite.org
Magnificent Hubble image of a cluster warping space and stripping gas
SYFY Official Site
Hubble image of galaxy cluster MACSJ01338-2155 shows gravitational lensing and gas stripped from galaxies.
Einstein's Telescope: The Hunt for Dark Matter and Dark Energy in the Universe
Google Books
"In Einstein’s Telescope, Evalyn Gates, an expert on all that’s dark in the universe, brings dark matter, dark energy, and even black holes
2 years ago
There Was No Women's March Even Remotely Close To Me, So I Threw My Own. End The Gender Gap In STEM!
There Was No Women's March Even Remotely Close To Me, So I Threw My Own. End The Gender Gap In STEM!
There Was No Women's March Even Remotely Close To Me, So I Threw My Own. End The Gender Gap In STEM!
There Was No Women's March Even Remotely Close To Me, So I Threw My Own. End The Gender Gap In STEM!

there was no women's march even remotely close to me, so i threw my own. end the gender gap in STEM! let young girls know they can be scientists!

2 years ago
Lunar Eclipse Over The ESO’s VLT, Chile
Lunar Eclipse Over The ESO’s VLT, Chile

Lunar Eclipse over the ESO’s VLT, Chile

2 years ago

Eclipse

Eclipse
Eclipse

Today there was a partial solar eclipse visible in mid to eastern europe.

In Germany we could see how the moon covers between 20 and 30% of the sun

2 years ago
Space + Academia
Space + Academia
Space + Academia
Space + Academia
Space + Academia
Space + Academia
Space + Academia
Space + Academia
Space + Academia

Space + Academia

Requested by @starclusters-super-dumb-reblogs

X X X | X X X | X X X

Space + Academia

Tags
2 years ago

me: majored in aerospace engineering to hopefully design rovers that go to other planets to perform little science experiments and find rocks

my classmates: i want to create missiles and advanced war weaponry for the military

me:

Me: Majored In Aerospace Engineering To Hopefully Design Rovers That Go To Other Planets To Perform Little
2 years ago

RULES OF MY BLOG

MATTER CAN NEITHER BE DESTROYED NOR CREATED

2 years ago

What that James Webb image really means. Full video here:

Here's a 1-minute video showing--in the words of visualization hero @EdwardTufte--the "compared to what" factor for today's amazing @NASAWebb image. Thanks to the @WWTelescope for making this possible, and @ADavidWeigel. I only wish @NASA and @POTUS had shown the image this way! https://t.co/ThqLJqCUMa pic.twitter.com/4Yd6CIRcst

— Alyssa A. Goodman (@AlyssaAGoodman) July 12, 2022
2 years ago
The Black Areas Represent The Remaining Natural Dark Skies In The United States

The black areas represent the remaining natural dark skies in the United States

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astrophysics-georg - i know way too much about this
i know way too much about this

just ask me things. please

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