Cool astronomy photos

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Rob Lister
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Re: Cool astronomy photos

Post by Rob Lister » Sun Apr 07, 2019 7:55 pm

do you expect anyone to believe that?

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Abdul Alhazred
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Re: Cool astronomy photos

Post by Abdul Alhazred » Sun Apr 07, 2019 8:42 pm

You one of those, Rob? :HoppingMad2:
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Witness
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Re: Cool astronomy photos

Post by Witness » Sun Apr 07, 2019 11:52 pm


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Bruce
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Re: Cool astronomy photos

Post by Bruce » Thu Apr 11, 2019 2:21 am

https://www.eso.org/public/news/eso1907/

Black hole photographed for the first time.

My high school physics teacher said this would never ever happen. I bet him it would. If he's still alive, he owes me a soda.
Such potential!

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Witness
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Re: Cool astronomy photos

Post by Witness » Thu Apr 11, 2019 2:36 am

Bruce wrote:
Thu Apr 11, 2019 2:21 am
photographed
See Pyrrho's relevant post. :mrgreen:

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Witness
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Re: Cool astronomy photos

Post by Witness » Fri Apr 12, 2019 11:49 pm

Image

Be prepared for a lot of scrolling: http://joshworth.com/dev/pixelspace/pix ... ystem.html. But it seriously helps for grasping all the immensity out there. (And that's only the Solar System. :| )

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Abdul Alhazred
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Re: Cool astronomy photos

Post by Abdul Alhazred » Sun Apr 14, 2019 12:39 am

this phenomenon was discussed in that other thread, but here's a more spectacular pic (with explanation):

https://apod.nasa.gov/apod/ap190408.html
Image "If I turn in a sicko, will I get a reward?"

"Yes! A BIG REWARD!" ====> Click here to turn in a sicko
The arc of the moral universe bends towards chaos.
People who believe God or History are on their side provide the chaos.

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Anaxagoras
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Re: Cool astronomy photos

Post by Anaxagoras » Sun Apr 14, 2019 5:36 am

Abdul Alhazred wrote:
Sun Apr 14, 2019 12:39 am
this phenomenon was discussed in that other thread, but here's a more spectacular pic (with explanation):

https://apod.nasa.gov/apod/ap190408.html
Explanation: What's happening in the sky? The atmosphere over northern Norway appeared quite strange for about 30 minutes last Friday when colorful clouds, dots, and plumes suddenly appeared. The colors were actually created by the NASA-funded Auroral Zone Upwelling Rocket Experiment (AZURE) which dispersed gas tracers to probe winds in Earth's upper atmosphere. AZURE's tracers originated from two short-lived sounding rockets launched from the Andøya Space Center in Norway. The harmless gases, trimethylaluminum and a barium/strontium mixture, were released into the ionosphere at altitudes of 115 and 250 km. The vapor trails were observed dispersing from several ground stations. Mapping how AZURE's vapors dispersed should increase humanity's understanding of how the solar wind transfers energy to the Earth and powers aurora.
Image

Prediction: someone will use this as fodder for a conspiracy theory, like they did with The High Frequency Active Auroral Research Program (HAARP).
A fool thinks himself to be wise, but a wise man knows himself to be a fool.
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Abdul Alhazred
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Re: Cool astronomy photos

Post by Abdul Alhazred » Mon Apr 15, 2019 3:17 pm

Best pic of Jupiter so far:

Image

https://apod.nasa.gov/apod/ap190415.html
Image "If I turn in a sicko, will I get a reward?"

"Yes! A BIG REWARD!" ====> Click here to turn in a sicko
The arc of the moral universe bends towards chaos.
People who believe God or History are on their side provide the chaos.

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Rob Lister
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Re: Cool astronomy photos

Post by Rob Lister » Mon Apr 15, 2019 4:14 pm

A home for Bruce

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Witness
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Re: Cool astronomy photos

Post by Witness » Mon Apr 15, 2019 11:47 pm

Around the black hole:

Image

M87 is in the lower right (you can just barely make out the jet); the string of galaxies is Markarian's chain.
Source: https://old.reddit.com/r/Astronomy/comm ... le_at_the/

M87 by NASA:

Image

And a blowup of the jet:

Image

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Re: Cool astronomy photos

Post by Anaxagoras » Tue Apr 16, 2019 4:36 am

Geostationary satellite exploding, apparently:



Problems start to occur about 20 seconds into the video.

More info here
A fool thinks himself to be wise, but a wise man knows himself to be a fool.
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Rob Lister
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Re: Cool astronomy photos

Post by Rob Lister » Tue Apr 16, 2019 11:07 am

The Intelsat 29e anomaly comes amid a string of satellite issues in geostationary orbit, where large communications and observation satellites can look down at the same area of the planet without expending fuel to maintain their position. During the last two years, satellites such as AMC-9, Telkom-1, AMOS-5, Eutelsat-33B, EchoStar-3, and Galaxy 11 have all experienced on orbit anomalies.
weirdness means aliens. OTOH, two years is about how long Trump has been in office.

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Rob Lister
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Re: Cool astronomy photos

Post by Rob Lister » Tue Apr 16, 2019 12:18 pm


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Bruce
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Re: Cool astronomy photos

Post by Bruce » Tue Apr 16, 2019 2:47 pm

Rob Lister wrote:
Tue Apr 16, 2019 11:07 am
The Intelsat 29e anomaly comes amid a string of satellite issues in geostationary orbit, where large communications and observation satellites can look down at the same area of the planet without expending fuel to maintain their position. During the last two years, satellites such as AMC-9, Telkom-1, AMOS-5, Eutelsat-33B, EchoStar-3, and Galaxy 11 have all experienced on orbit anomalies.
weirdness means aliens. OTOH, two years is about how long Trump has been in office.
First gravity waves from the M87 black hole are reaching us.
Such potential!

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Re: Cool astronomy photos

Post by Anaxagoras » Tue Apr 23, 2019 12:05 pm



Honk!!
A fool thinks himself to be wise, but a wise man knows himself to be a fool.
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Witness
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Re: Cool astronomy photos

Post by Witness » Wed Apr 24, 2019 4:32 am

Hubble celebrates its 29th birthday with unrivaled view of the Southern Crab Nebula

Image

On 24 April 1990, the NASA/ESA Hubble Space Telescope was launched on the space shuttle Discovery. It has since revolutionised how astronomers and the general public see the Universe. The images it provides are spectacular from both a scientific and a purely aesthetic point of view.

Each year the telescope dedicates a small portion of its precious observing time to take a special anniversary image, focused on capturing particularly beautiful and meaningful objects. This year's image is the Southern Crab Nebula, and it is no exception.

This peculiar nebula, which exhibits nested hourglass-shaped structures, has been created by the interaction between a pair of stars at its centre. The unequal pair consists of a red giant and a white dwarf. The red giant is shedding its outer layers in the last phase of its life before it too lives out its final years as a white dwarf. Some of the red giant's ejected material is attracted by the gravity of its companion.

When enough of this cast-off material is pulled onto the white dwarf, it too ejects the material outwards in an eruption, creating the structures we see in the nebula. Eventually, the red giant will finish throwing off its outer layers, and stop feeding its white dwarf companion. Prior to this, there may also be more eruptions, creating even more intricate structures.
https://www.sciencedaily.com/releases/2 ... 131419.htm

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Re: Cool astronomy photos

Post by Witness » Thu Apr 25, 2019 12:23 am

Image
On Mars, just as on Earth, gravity can send material tumbling down steep slopes — and the results can be stunningly pretty, as shown in this photograph NASA released today.

The image reveals an area of Mars called Cerberus Fossae, which scientists believe is the youngest fault system on the planet. Here, geologists see two different types of landslides happening.

First, there are larger boulders, which appear light blue against the dark blue background in the image. Scientists believe these boulders come from the uppermost layer of bedrock, the thin layer of light blue near the top of the image.

Then, there are narrow, dark lines across the blue rock, which scientists believe also mark downslope movement, simply of smaller particles of rock.

In both cases, the processes are formally known as mass wasting. The phenomenon intrigues scientists, who hope to eventually understand how it plays out differently across Mars' surface and over the Martian seasonal cycle.

An instrument called the HiRISE camera, which is part of NASA's Mars Reconnaissance Orbiter, captured the image on Jan. 24. The spacecraft has been in orbit since 2006, and scientists hope that its camera will be able to continue working at the Red Planet for years to come.
https://www.space.com/mars-landslides-c ... photo.html

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Abdul Alhazred
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Re: Cool astronomy photos

Post by Abdul Alhazred » Sat Apr 27, 2019 12:35 pm

Black hole image in context.

Image

Explanation: https://apod.nasa.gov/apod/ap190427.html
Image "If I turn in a sicko, will I get a reward?"

"Yes! A BIG REWARD!" ====> Click here to turn in a sicko
The arc of the moral universe bends towards chaos.
People who believe God or History are on their side provide the chaos.

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Re: Cool astronomy photos

Post by Abdul Alhazred » Thu May 02, 2019 4:55 pm

https://apod.nasa.gov/apod/ap190502.html

Image
Explanation: Orbiting 400 kilometers above Quebec, Canada, planet Earth, the International Space Station Expedition 59 crew captured this snapshot of the broad St. Lawrence River and curiously circular Lake Manicouagan on April 11. Right of center, the ring-shaped lake is a modern reservoir within the eroded remnant of an ancient 100 kilometer diameter impact crater. The ancient crater is very conspicuous from orbit, a visible reminder that Earth is vulnerable to rocks from space. Over 200 million years old, the Manicouagan crater was likely caused by the impact of a rocky body about 5 kilometers in diameter. Currently, there is no known asteroid with a significant probability of impacting Earth in the next century. But a fictional scenario to help practice for an asteroid impact is on going at the 2019 IAA Planetary Defense Conference.
Image "If I turn in a sicko, will I get a reward?"

"Yes! A BIG REWARD!" ====> Click here to turn in a sicko
The arc of the moral universe bends towards chaos.
People who believe God or History are on their side provide the chaos.