AkaSci, (edited )
@AkaSci@fosstodon.org avatar

Let's celebrate with this image taken today by Mars rover Perseverance's SHERLOC Autofocus and Context Imager (ACI).

This is the first such image of a rock sample since Dec 16, 2023, when the dust cover of the camera and laser spectroscopy instrument got stuck. It is still stuck, but in an open position and its auto-focus mechanism is nonoperational.

The camera took a sequence of images from different distances; the middle ones are in focus.

🎉
https://mars.nasa.gov/mars2020/multimedia/raw-images/

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AkaSci, (edited )
@AkaSci@fosstodon.org avatar

Next on is this strange looking lenticular galaxy NGC 4753 by .

Those are dust lanes twisting around the galactic nucleus and are likely the result of a merger with a dwarf galaxy about 1.3 billion years ago.

The gas and dust in the galactic disk got twisted by "differential precession" and are seen as the complex shapes seen edge-on from earth.

Most of the unseen mass in the galaxy lies in a slightly flattened, spherical halo of dark matter.

https://science.nasa.gov/missions/hubble/hubble-views-cosmic-dust-lanes/
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