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Dean Calahan
Attended Johns Hopkins: Ph.D. Biology
Lives in Chesapeake Bay
7,500 followers|1,710,174 views
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Dean Calahan

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Whew! Safely on their way.
 
Did you miss today's launch to the International Space Station? Want to see if again? Watch it now!

Kjell Lindgren of NASA, Oleg Kononenko of the Russian Federal Space Agency (Roscosmos) and Kimiya Yui of the Japan Aerospace Exploration Agency (JAXA) lifted off aboard a Soyuz spacecraft from the Baikonur Cosmodrome in Kazakhstan at 5:02 p.m. EDT (21:02 UTC and 3:02 a.m. on July 23 Baikonur time). More: http://go.nasa.gov/1Jz4od3
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The cubeship - somehow I hadn't stumbled across this before, or if I did, it didn't register. Don't tell me there is another website with hybrid cubesat/solar sail/ion drive/re-entry vehicles!

(No, wait! If there is, tell me!)
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你好,這是什麼太空飛翔?
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I'm so glad that there are plant enthusiasts that I can tap into to provide G+ postings, such as this excellent moss.
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Saw this multiple times in my stream this morning, so I'm late, but in case you haven't:
Discovery bolsters idea that intriguing marks are made of ice, not salt.
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It is looks like crater but with closer look we can see an concentric circles - so it is  syncline. Water evaporation from center is a cause of descent of surface.
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#nix   #hydra   #pluto  
 
New Horizons Captures Two of Pluto's Smaller Moons

Two new images taken by New Horizons, Plutos's moons Nix and Hydra. New Horizons’ first color image of Pluto’s moon Nix, taken by the Ralph instrument and with its colors enhanced, reveals an intriguing reddish tinted region, which is estimated to be 42 kilometers (26 miles) long and 36 kilometers (22 miles) wide.

Pluto’s moon Hydra (right) is seen in this black and white image taken from New Horizons’ LORRI instrument on July 14, 2015 from a distance of about 231,000 kilometers (143,000 miles). Features as small as 1.2 kilometers (0.7 miles) are visible on Hydra, which measures 55 kilometers (34 miles) in length. 

More infomation here:
http://www.nasa.gov/image-feature/new-horizons-captures-two-of-plutos-smaller-moons

More on the New Horizons space probe and its mission:
http://www.nasa.gov/mission_pages/newhorizons/main/index.html
http://en.wikipedia.org/wiki/New_Horizons

Image credit: NASA/JHUAPL/SWRI

#science   #newhorizons   #pluto   #nasa   #space   #spaceexploration   #solarsystem   #plutoflyby   #nix   #hydra
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Dean Calahan

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I always dilute my fat disposal with hot hot water and dish soap, although I'm mainly concerned with the first 50 feet or so outside my foundation. I'm probably just providing an ideal inoculant suspension.

Also: a shout-out to +Jonathan Eisen. Talk about microbiology of the built environment!
 
Congealed fat clogging the sewers...
Beneath London, There's A Revolting Battle To Keep The Sewers Free Of 'Fatbergs'
"Every day beneath the streets of London, sewer technicians are fighting a grim war against giant 'fatbergs' which clog the system and threaten to regurgitate putrid waste back into people's homes."
"The problem gets worse at Christmas, when two extra Olympic-sized swimming pools of turkey fat are poured down Londoners' sinks."
"It's about the nastiest stuff you can get. The diarrhoea stuff is a pleasure compared to this," he added, tapping a spade on the thick fat layer engulfing his thighs.
"Fungi grow on the crust, which looks like solidified vomit. Walking through it leaves a wake like an icebreaker ship."

An exemple:
10-tonne fatberg removed from west London sewer
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A cross section of a fern leaf. The site has other nice microscopy.
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Dean Calahan

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Ferns may not be the most popular of medicinal plants, but that doesn't mean they haven't been thought of that way.
This post is provided by Anne Marie Creighton, who joins us this year as a research fellow in the Dumbarton Oaks Library. Although flowers predominate in most early books of medicine printed in Eur...
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Yeah, well I have an upcoming trip here and we were worried that something like this would happen, with all the droughts and spruce budworms and such. I can hope that none of the mountain cabins or campsites we'll be using will be evacuated.

We can hope that Going-to-the-sun Road will be open by the time we get there! Otherwise, it's quite a drive to get from one side of the park to the other.

OTOH, perhaps this is schandenfreude, but there's very little quite as surreal as hiking through where there was a recent fire, unless it's hiking in the remnants of a volcanic eruptions like St. Helens.
A quick-moving 1,000-acre fire at Glacier National Park has shut down the popular Going-to-the-Sun Road and inspired an evacuation of back country hikers.
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Note that the picture appears of a red hot tank coming out of something like an annealing oven. Look at the technicians in mirror suits.
 
Current nuclear reactors have 40-60 year operating lives but new nickel alloy could make 120 year reactor vessel
A new 'ultra pure' nickel alloy has been used to create a reactor vessel, which Rosatom says could potentially last 120 years. Reactors that could last 120 years would have better economics than reactors with shorter lives. Also, a reactor vessel that laste...
A new 'ultra pure' nickel alloy has been used to create a reactor vessel, which Rosatom says could potentially last 120 years. Reactors that could last 120 years would have better economics than reactors with shorter lives. A...
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Looks like a containment vessel. Those suits protect them from burning. 
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Another copy of the new #pluto  mountains for your stream.
 
More mountains on Pluto! Our New Horizons spacecraft spotted a second mountain range from it’s #PlutoFlyby -- this one is estimated to be the same height as the United States’ Appalachian Mountains. Details: http://go.nasa.gov/1LB6Sfc
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My fieldwork has tended to involve the subtropics, wide brimmed hats, sunglasses, and Tevas, although if things go well I'll be doing some work in rather more apocalyptic zones (in the hot direction, not the cold direction). Yes, I used the words "go well" and "apocalyptic". Is this a problem?

Maybe I'll be able to get some great shots from there, if that happens.
 
Human Spaceflight and Operations image of the week: dark science in cold #Antarctica: searching for extremophiles outside the #Concordia research station.

http://www.esa.int/spaceinimages/Images/2015/07/Dark_science
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Strange, this got double-posted somehow.
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Dean's Collections
People
Have them in circles
7,500 people
Natalia Manrique's profile photo
Karnan sun's profile photo
Aaron Farrington's profile photo
Jucier Marinho's profile photo
Brent Newhall's profile photo
Sean Reese's profile photo
Marek Szubert's profile photo
Gabriel Sabbagh's profile photo
Joe Dzado's profile photo
Work
Occupation
Algae farmer
Skills
Cell & molecular biology, genetics, bioinformatics, software engineering, making things happen
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Chesapeake Bay
Previously
Puget Sound - Willamette Valley
Story
Tagline
Genes, Cells, Informatics, …Algae!
Introduction
Willamette brewed, Puget aged, Chesapeake tapped.

I love reading what you post directly. However, I don't want to see what you've +1'd. Also, please try using Collections for your food and cat pictures.

Have a nice day!
Bragging rights
Walked around Mount Rainier in nine days. Hiked the entire Olympic National Park coast. Rain camped, snow camped, intentionally.
Education
  • Johns Hopkins: Ph.D. Biology
  • Towson University: B.S. Molecular Biology, Biochemistry, & Bioinformatics
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