Cool astronomy photos

[Bruce]

Literally took all day.

[Witness]

↑ Great video!

There's something flying by between 15 and 16 s. Screenshot:

[Anaxagoras]

Another satellite perhaps? Or an airplane?

[robinson]

Literally took all day.

A day for the ISS is less than two hours

[robinson]

But it was a good joke

[Rob Lister]

Another satellite perhaps? Or an airplane?

It appears way too large to be an airplane flying a couple of hundred km below it. It's velocity is pretty close to that of the ISS (or we'd never see it) so if it is in orbit , it's a fairly near orbit. The video is speed up 4 times but I suppose it's possible to use the frame rate to work out the exact velocity and therefore the exact orbit and therefore the exact distance and therefore the exact size.

[Anaxagoras]

A UFO then. More proof!

[Abdul Alhazred]

Just don't be a spoilsport by identifying it.

[Abdul Alhazred]

Let do a close up CSI style.

OMFG! It's the Pan-Am Space Clipper!

Not space aliens at all, but visitors from a parallel world!



I miss that world.

[Bruce]

A UFO then. More proof!

No comment from Lord Kilik?

[Witness]

Neowise:



Technical details: https://old.reddit.com/r/Astronomy/comm ... _c2020_f3/

[Witness]

[ceptimus]

Curiosity after seven years on Mars:

In those Curiosity selfie photos, it's always difficult to see how Curiosity is holding its camera - no obvious signs of the "selfie stick" to me - neither in the photo nor the shadows.

[Witness]

In those Curiosity selfie photos, it's always difficult to see how Curiosity is holding its camera - no obvious signs of the "selfie stick" to me - neither in the photo nor the shadows.

The selfies are stitched-together panoramas. With ad hoc software you can choose which original image (or part of) to use for any part of the result, leaving the arm and its shadow invisible.
You can do that with Hugin, e. g. for getting rid of moving people in your panorama.

[Fid]

...You can do that with Hugin, e. g. for getting rid of moving people in your panorama.

"... intellects vast and cool and unsympathetic, regarded this Earth with envious eyes, and slowly and surely drew their plans against us. NASA they named it knowing the love Men hold for acronyms..."

[Witness]

The fault in our Mars



This image from NASA's Mars Reconnaissance Orbiter (MRO) of northern Meridiani Planum shows faults that have disrupted layered deposits. Some of the faults produced a clean break along the layers, displacing and offsetting individual beds.

Interestingly, the layers continue across the fault and appear stretched out. These observations suggest that some of the faulting occurred while the layered deposits were still soft and could undergo deformation, whereas other faults formed later when the layers must have been solidified and produced a clean break.

The map is projected here at a scale of 50 centimeters (19.7 inches) per pixel. [The original image scale is 54.6 centimeters (21.5 inches) per pixel (with 2 x 2 binning); objects on the order of 164 centimeters (64.6 inches) across are resolved.] North is up.

https://phys.org/news/2017-12-image-fau ... .html#nRlv

[robinson]

[Witness]

Mars launch: NASA sends Perseverance rover to space



The Perseverance rover and its Ingenuity helicopter are finally on the journey to Mars.
The spacecraft carrying the rover and helicopter successfully launched to Mars Thursday morning aboard a United Launch Alliance Atlas V 541 rocket from Cape Canaveral, Florida at 7:50 a.m. ET.
The team in the control center at NASA's Jet Propulsion Laboratory confirmed they received the spacecraft's signal shortly after 9 a.m. ET.
...
After traveling through space for about seven months, Perseverance is scheduled to land at Jezero Crater on Mars on February 18, 2021.

https://edition.cnn.com/2020/07/30/worl ... index.html

[Witness]

Dust devil taken by the Spirit rover.

[Witness]

NGC 1300, a barred spiral galaxy imaged by the Hubble Space Telescope