Dr. Sarah Milkovich

@milkysa.bsky.social

Planetary Wanderer: public speaker, spacecraft engineer, scientist, artist, maker, mom. https://www.sarahmilkovich.com/ https://www.etsy.com/shop/windstoneandstars

Rowling: could it be that i'm no longer britainsss mosst beloved national treassure?!? Julia Donaldson: [busts in, blowing vuvazela] GET GRUFFALO'ED BIIIITTTCHHHHH Rowling: GODDAMN IT Rowling: one of thessse dayss i'm going to figure out how she keepsss getting in here

Jezero Crater, Mars, seen on 27 July 2026. There is nothing—and I emphasise nothing—we humans could do to Earth that would make it less hospitable than Mars. So should we send astronauts there? Yes! Absolutely! But we will never colonise Mars, nor should we.

A cold, dead planet.

A few more Viking 1 Mars surface images. Vikings 1 & 2 yielded a variety and duration of observations that gave the first 'Ground Truth' about this intriguing neighbor world's surface and atmosphere. It's early digital camera design worked well with the brightness range of the surface details.

Late in the afternoon of Martian day 651, on May 20, 1978, the lengthening shadows of the larger rocks were photographed by Viking 1. 

A few tries were done at obtaining color photos with the higher resolution settings of the camera. A raised rim of a 500 meter wide impact crater about 2.5 km away can be seen at the horizon, looking much like Arizona's Meteor Crater as one approaches it. The image processing attempts to show something of the actual brightness and colors of the scene and sky.  The Martian surface is darker than the impression one would have from most of the photos, which are understandably optimized in exposure to bring out surface details. Three tries at using the color and grayscale chart to recover the colors of the scenery. The grayscale ended up being pivotal in obtaining some sense of color balance. I tried incorporating the IR data by using it to modify the blue to try to cancel out the leak of Infra Red through the blue filter, but I was unable to obtain coherent results. So I gave up on making the blue chip blue, which notoriously photographed as purple with that camera anyway, and relied on the gray scale to establish some color anchor point. I am not an engineer trying to account for all the camera quirks, I approach this like I would when photographing my artwork. I have a gray scale and color chart in the frame for reference and adjustments. 
  Basically, using the 'curves' tool in Photoshop to establish a gray point is the key. The initial result is usually ludicrously garish so I then reduce the saturation to best show the red and green chips as as well as the overall scenery, in this case seen 'over the shoulder' of the lander. Of course there is judgement involved in seeking to show what I think the camera is seeing.  An early space image processing I did over 20 years ago, of the celebrated Viking 1 Sunset picture. I took the grayscale files and hand blended the rather coarse steps in the brightness contours recorded by that limited grayscale camera system in the twilight. This, along with retouching of brightness variations in the dark foreground spacecraft parts etc. as they were scanned, was done to show this amazing image to its best advantage.  I remember being captivated when I first saw a contrasty initial version of this image in a Viking newsletter.  

 Although Viking is a rewarding data set to explore, the monumental and sterling work of Olivier Goursac makes me think twice before thinking I have any new contribution to what has been done. 

 I wish to acknowledge the useful and enduring Viking image browser set up by Holger Isenberg, with all the lander images available to download and play with.

From NASA's press secretary, an update on the Madrid DSN site. Wildfire damage is "primarily to pavement and surrounding vegetation, with no significant structural damage observed to antennas or buildings." x.com/NASASpox/sta...

Bethany Stevens (@NASASpox) on X

On July 25, an initial onsite inspection by the NASA Madrid Deep Space Communications Complex (MDSCC) emergency response team found wildfire damage primarily to pavement and surrounding vegetation, wi...

x.com

Listen, i work in historic preservation and conservation and this headline is misleadingly skipping the key point: this specifically and pointedly destroys the protections for Native American sacred sites. built heritage matters but not as much as the rights of indigenous folk.

NPR@npr.org · 2w ago

A council packed with Trump appointees is poised to rewrite historic preservation rules. Critics say that could help him build his D.C. arch faster — and endanger important sites across the country.

The U.S. Secretary of Defense just stated that—so far—the war with Iran has cost $37.5 billion dollars. That's since February. That same amount is how much the United States spent on planetary science from FY2013 through FY2026 inclusive. Thirteen years of planetary science or five months of war.

The Curiosity rover on Mars. At about $2.6 billion, it buys you about ten days of Iran war.

Here's Parkinsonia, one of the most recognisable ammonites. Named after James Parkinson, a surgeon (first to recognise Parkinson's disease), and a palaeontologist (who drew for Mantell), and a radical social reformist, activist for universal suffrage, suspected of scheming to assassinate the King!

Ribbed yellowish ammonite ParkinsoniaOrganic Remains of a Former World' (1804) by James Parkinson

I did some digging in this and thread below on places you might encounter Taylor Farms in addition to lettuce -- they sell onions and cilantro to restaurants so don't order dishes with those raw. The other big one is unlabelled grocery store deli fruit and veggie snacks, or cold sandwiches.

Lev Mirov@thelionmachine.bsky.social · 3w ago

Here's the most comprehensive list of their products they sell to the food service industry I could find. taylorfarmsfoodservice.com/products/

PSA: if you feel like maybe reading some old books, like maybe you were inspired to pick up Pride & Prejudice because @trungles.com was live-posting his read-through, you could do much worse than Standard Ebooks. Think Project Gutenberg, but nice epubs.

Standard Ebooks

Free and liberated ebooks, carefully produced for the true book lover. Download free ebooks with professional-quality formatting and typography, in formats compatible with your ereader.

standardebooks.org