a medieval painting of a scruffy white dog with a strangely human face

normal dog, switzerland, 15th century

A person stands in the distance on a snowy landscape shining a flashlight on the ground. Trees and snow capped mountains are on the horizon. In the starry sky above, several iconic red nebulas are visible. Please see the explanation for more detailed information.

🔭 Orion's Treasures over Snowy Mountains

Image Credit & Copyright: Włodzimierz Bubak; Text: Ogetay Kayali (MTU)

apod.nasa.gov/apod/ap26012...

What is creating these unusual spots? Light-colored spots on Martian rocks, each surrounded by a dark border, were discovered last year by NASA's Perseverance Rover currently exploring Mars. Dubbed leopard spots because of their seemingly similarity to markings on famous Earth-bound predators, these curious patterns are being studied with the possibility they were created by ancient Martian life. The pictured spots measure only millimeters across and were discovered on a larger rock named Cheyava Falls. The exciting but unproven speculation is that long ago, microbes generated energy with chemical reactions that turned rock from red to white while leaving a dark biosignature ring, like some similarly appearing spots on Earth rocks. Although other non-biological explanations have not been ruled out, speculation focusing on this potential biological origin is causing much intrigue.

NASA Astronomy Hourly Picture - 2025-09-28: Leopard Spots on Martian Rocks
#Astronomy #NASA #Space

Enormous reptiles, neither quite lizard nor mammal-like in form, rear, grapple and tear at one another in front of a setting sun at a rocky, foreboding shore. One, the horned Iguanodon, roars so widely that its grotesque tongue protrudes from its mouth like a tentacle; the other, a Megalosaurus, tears a string of dark flesh from its opponents' chest. They are surrounded by other snarling, roaring beasts: plesiosaurs, ichthyosaurs and a distant, spike-backed Hylaeosaurus. Palm trees and ferns dot the top of rocky escarpments alongside perching pterosaurs with translucent, bat-like wings. The remains of ammonites and skulls of reptiles decay into water and rocks.

Another John Martin-style #paleoart piece painted for fun. This riffs on 1830s views of the British Wealden, where giant dinosaurs (Iguanodon and Megalosaurus here) engaged in violent combat in grand natural amphitheatres. Pterosaurs and other animals watch on. ARE YOU NOT ENTERTAINED? #sciart

What is that unusual light in the sky? A common question, this particular light was not only bright but moving and expanding. It appeared just as the astrophotographer and his friend were photographing the Golden Gate Bridge in San Francisco, California against a more predictable night sky. They were not alone in seeing this unusual display -- at least hundreds of people in California reported a similar sight. The consensus of experienced sky observers was that the plume resulted from a rocket launch -- an explanation that was soon confirmed as an unpublicized test of a submarine-launched, unarmed, Trident II D5 nuclear missile. Such tests are not uncommon but do not usually occur just after sunset near a major metropolitan area -- when they are particularly noticeable to many people. Were plume images not posted to the Internet and quickly identified, such a sky spectacle might have been understood by some to be associated with more grandiose -- but incorrect -- explanations.

NASA Astronomy Hourly Picture - 2015-11-11: An Unexpected Rocket Plume over San Francisco
#Astronomy #NASA #Space

For the first time, scientists using NASA’s Hubble Space Telescope have witnessed a massive object with the makeup of a comet being ripped apart and scattered in the atmosphere of a white dwarf, the burned-out remains of a compact star. The object has a chemical composition similar to Halley’s Comet, but it is 100,000 times more massive and has a much higher amount of water. It is also rich in the elements essential for life, including nitrogen, carbon, oxygen, and sulfur. These findings are evidence for a belt of comet-like bodies orbiting the white dwarf, similar to our solar system’s Kuiper Belt. These icy bodies apparently survived the star’s evolution as it became a bloated red giant and then collapsed to a small, dense white dwarf. Caption: This artist's concept shows a massive, comet-like object falling toward a white dwarf. New Hubble Space Telescope findings are evidence for a belt of comet-like bodies orbiting the white dwarf, similar to our solar system's Kuiper Belt. The findings also suggest the presence of one or more unseen surviving planets around the white dwarf, which may have perturbed the belt to hurl icy objects into the burned-out star. Credits: NASA, ESA, and Z. Levay (STScI) NASA image use policy. NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scien...

Hubble Witnesses Massive Comet-Like Object Pollute Atmosphere of a White Dwarf - From Goddard Space Flight Center - https://flic.kr/p/RMZgCt

Icicles forming, the ends are rounded with drops frozen in place. A few frost crystals cling to the underside of the ice. The transparent icicles hang down in front of dark shadowy grey water in which they are mirrored.

#Ice #Snow #Frost #MacroMonday A close up of drops/icicles forming underneath a snow shelf lining the river.

Cómo doma ese chad

Love crystals.
#gemstone #minerals #crystal #electroformed #nature #handmade #sciart

Abundant Eocene fossils of plants and animals are found in the Green River Formation of Wyoming, Colorado and Utah. This fossil Pseudosalix Hanleyi, with stems, leaves and flowers preserved, is harder to find than a T-rex tooth!

Abundant Eocene fossils of plants and animals are found in the Green River Formation of Wyoming, Colorado and Utah. This fossil Pseudosalix Hanleyi, with stems, leaves and flowers preserved, is harder to find than a T-rex tooth!

In this snapshot from November 18, the Full Moon was not far from Earth's shadow. In skies over Sicily the brightest lunar phase was eclipsed by passing clouds though. The full moonlight was dimmed and momentarily diffracted by small but similar sized water droplets near the edges of the high thin clouds. The resulting iridescence shines with colors like a lunar corona. On that night, the Full Moon was also seen close to the Pleiades star cluster appearing at the lower left of the iridescent cloud bank. The stars of the Seven Sisters were soon to share the sky with a darker, reddened lunar disk.

NASA Astronomy Hourly Picture - 2021-12-04: Iridescent by Moonlight
#Astronomy #NASA #Space

Sisi pero úsalo rápido que con el calor pierde la cadena de frío

Bueno entonces tiramos y fíjate si rompe un vidrio

Robalo que vale casi como un meteorito

A colorful starfield surrounds a giant nearly-spherical nebula that has texture and stripes like watermelon. The lower right of the nebula is open making it appear like a medulla oblongata -- the stem that connects to a brain. Please see the explanation for more detailed information.

🔭 CTB 1: The Medulla Nebula

Image Credit: Pierre Konzelmann

apod.nasa.gov/apod/ap26011...

Data processed from Nasa Perseverance Credit: Nasa/JPL-Caltech/AndreaLuck This image was acquired on Dec. 30, 2021 (Sol 306) at the local mean solar time of 15:57:25. Feel free to share, giving the appropriate credit and providing a link to the original image or tweet: creativecommons.org/licenses/by/3.0/

Mars - Rock Issole - Sample 7 - Front Left Hazcam - Nasa’s Perseverance - Sol 306 - From Andrea Luck (andrealuck.bsky.social) - https://flic.kr/p/2mULTkg

The featured image shows Jupiter in infrared light as captured by the James Webb Space Telescope. Visible in unusually dark colors are Jupiter's clouds including the Great Red Spot, a ring, several moons, and bright aurora. Please see the explanation for more detailed information.

🔭 Jupiter from the Webb Space Telescope

Image Credit: NASA, ESA, CSA, Jupiter ERS Team; Processing: Ricardo Hueso (UPV/EHU) & Judy Schmidt

apod.nasa.gov/apod/ap26011...

Authentic Natural Azurite geode specimen from the Rubtsovskoye Mine, Altai Mountains, Russia.

Video: Margraf Minerals

"Courtesy NASA/JPL-Caltech." processing 2di7 & titanio44

SPIRIT sol 843 pancam detail - From 2di7 & titanio44 - https://flic.kr/p/bno9XU

Watch as the most detailed infrared view of the Helix Nebula from #NASAWebb is put into context using the famous visible light image from Hubble and previous infrared imaging from the retired Spitzer Space Telescope: news.stsci.edu/4qPKTsL

NASA/JPL-Caltech/Kevin M. Gill

Mars2020 - Sol 1634 - WATSON - From Kevin M. Gill (kevinmgill.bsky.social) - https://flic.kr/p/2rvriyB