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Surprising amounts of mercury settling into deep-sea trenches may provide a fuller picture of the metal’s path through the environment, but pulling it to the surface is no easy feat.

eos.org/tag/pacific-ocean

Parts of gas and dust clouds of the #star formation region, a fraction of the IC 1396 complex, may appear to take on foreboding forms.

#astronomy #astrophotography
apod.nasa.gov/apod/ap221212.ht

Today is International Mountain Day! Here are some of my favorite shots from recent ascents.

Loveland Pass, Colorado - 11,990 ft / 3,655 m
Wheeler Peak, New Mexico (State High Point) - 13,167 ft / 4,013 m
Mount Taylor (Tsoodził), New Mexico - 11,305 ft / 3,446 m
Mount Magazine, Arkansas (State High Point) - 2,753 ft / 839 m

#InternationalMountainDay #Photography #Landscape #Mountains

Astronomer Annie Jump Cannon was born #OTD in 1863. She was a pioneer of stellar classification and co-creator of the Harvard Classification Scheme. Over her lifetime she *manually* classified around 350,000 stars.

Image: Harvard University, Radcliffe Archives

On 20 December the thin Waning Crescent Moon will appear close to the double star Zubenelgenubi (Alpha Librae). Should be a fine photographic opportunity. Look southeast from 5am. #Astrodon #Astronomy #Astro #Space #Astrophotography

“To find a science teacher is hard; to appoint a good, experienced and skilled science teacher is almost impossible!” edu.rsc.org/feature/where-have

Pink Snow Is Not a Cute Phenomenon—Here’s Why. Researchers are trying to understand what drives the algal blooms that tinge ice—and have implications for the drought-stricken American West’s water supply. wired.com/story/pink-snow-is-n

Pink Dawn.

Mid-November 2021, 9.30 am in Siglufjörður which is just above 66° north. The sky and the snow-covered flanks of Hafnarfjall (about 540 m high) are tinted pink by the rising sun.
#Iceland #SaturdayPhoto #SunriseOnSaturday

On Air: Hawai'i Public Radio broadcasting The Conversition with astronomer R. Brent Tully, on Local Supercluster Orbits Mapped

Our home galaxy of the Milky Way resides in a “supercluster” of more than 100,000 other galaxies. The orbits of those galaxies have been mapped for the first time.

hawaiipublicradio.org/show/the

#radio #radioshow #publicradio #news #astronomy #astronomer #laniakea #supercluster #universe #cosmology #astrophysics #honolulu #hawaii #hawaiilife #aloha #space #science #research

Detecting Earth-like Planets with an Alternative Biosignature

NASA-supported researchers have found that the gas methyl bromide (CH3Br) might be useful as a biosignature if it is detected in the atmosphere of Earth-sized planets around M Dwarf stars (also called red dwarf or M-type stars)

astrobiology.nasa.gov/news/det

🕊

Commemorating the 75th Anniversary of the

Every year on 10 December, the world celebrates Human Rights Day, the very day when, in 1948, the United Nations General Assembly adopted the Universal Declaration of Human Rights (UDHR).

This year’s Human Rights Day slogan is “, , and ” and the call to action is

ohchr.org/en/get-involved/camp

Mechanical Watch
a great article explaining the workings of its mechanism ⏱

ciechanow.ski/mechanical-watch

courtesy @alomshaha on Twitter

Europa’s Plate Tectonic Activity Is Unlike Earth’s

“The moon of Jupiter has likely experienced intermittent, regional plate tectonic activity in the past, although the plates are currently dormant.”

By Morgan Rehnberg

eos.org/research-spotlights/eu

Broad-billed Hummingbird

Brilliantly-colored hummingbird with dark tail and mostly red bill. Primarily a Mexican species, but occurs locally in the southwestern U.S. Can appear all dark at a distance, but in the right light, look for beautiful iridescent blues and greens on male's body. Females are less colorful than males, dusky grayish below with prominent white stripe behind the eye. Compare especially with female White-eared Hummingbird, which is more spotted below and has a broader white eyestripe and darker cheek. Occurs in scrubby riparian woodland, canyons, and thorn forest. Often visits hummingbird feeders.

Link: ebird.org/species/brbhum

The Spodek music & sports arena channelling the final sequence of Close Encounters of the Third Kind in Katowice this evening 👽🛸

#poland #photography #itsneveraliens

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