Space
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The brightly lit limb of a crescent Enceladus looks ethereal against the blackness of space. This image is a composite of images taken with the Cassini spacecraft narrow-angle camera on March 29, 2017, using filters that allow infrared, green, and ultraviolet light.
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Earth rise as photographed by Apollo 16
View of Moon setting over an Earth limb taken by the Expedition 40 crew aboard the International Space Station (ISS).
Earth-orbiting HST, airglow over Earth's horizon, and crescent moon (2-13 Dec 1993)
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Interesting side-line discussion I was having with friends about CRIPSR's recent advances in editing gene sequences and I posited that this will lead to types of DNA replacement to increase longevity by reducing aging effect, or being able to reanimated frozen DNA at some point for deep space exploration.
VERY interested in the scientific and moral implications of this project.2 -
The Sun, which is 92 Million miles away, is so loud that if space was filled with air it would be 125db on Earth.
Three distinct active regions with towering arches above them rotated into view over a three-day period (Sept. 24-26, 2017). In extreme ultraviolet light, charged particles that are spinning along the ever-changing magnetic field lines above the active regions make the lines visible.
To give some sense of scale, the largest arches rose up many times the size of Earth.
Movies are available at https://photojournal.jpl.nasa.gov/catalog/PIA22038
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Juno Observes Jupiter, Io and Europa
This color-enhanced image of Jupiter and two of its largest moons -- Io and Europa -- was captured by NASA's Juno spacecraft as it performed its eighth flyby of the gas giant planet.
The image was taken on Sept. 1, 2017 at 3:14 p.m. PDT (6:14 p.m. EDT). At the time the image was taken, the spacecraft was about 17,098 miles (27,516 kilometers) from the tops of the clouds of the planet at a latitude of minus 49.372 degrees.
Closer to the planet, the Galilean moon of Io can be seen at an altitude of 298,880 miles (481,000 kilometers) and at a spatial scale of 201 miles (324 kilometers) per pixel. In the distance (to the left), another one of Jupiter's Galilean moons, Europa, is visible at an altitude of 453,601 miles (730,000 kilometers) and at a spatial scale of 305 miles (492 kilometers) per pixel.
Citizen scientist Roman Tkachenko processed this image using data from the JunoCam imager.1 -
A Geologic Model for Eridania Basin on Ancient Mars
This diagram illustrates an interpretation for the origin of some deposits in the Eridania basin of southern Mars as resulting from seafloor hydrothermal activity more than 3 billion years ago.
The ground level depicted is an exaggerated topography of a transect about 280 miles (450 kilometers) long. Blue portions of the diagram depict water-depth estimates and the possibility of ice covering the ancient sea.
Thick, clay-rich deposits (green) formed through hydrothermal alteration of volcanic materials in deep water, by this model. Notations indicate deep-water reactions of iron and magnesium ions with silicates, sulfides and carbonates. Deep-seated structural discontinuities could have facilitated the ascent of magma from a mantle source.
Chloride deposits formed from evaporation of seawater at higher elevations in the basin.
Eridania Basin, located at the head of Maadim Vallis, has mounting geomorphic and spectral evidence that it may have been the site of an ancient inland sea. This image is from NASA Mars Reconnaissance Orbiter.
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Neptune
This photograph of Neptune was reconstructed from two images taken by NASA Voyager 2. At the north top is the Great Dark Spot, accompanied by bright, white clouds that undergo rapid changes in appearance.1 -
Hubble Finds Many Bright Clouds on Uranus
A recent NASA Hubble Space Telescope view reveals Uranus surrounded by its four major rings and by 10 of its 17 known satellites.0 -
Masking Out Galaxies
This graphic illustrates how the Cosmic Infrared Background Experiment, or CIBER, team measures a diffuse glow of infrared light filling the spaces between galaxies. The glow does not come from any known stars and galaxies.1 -
Black holes colliding:1
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Found this to interesting:
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This image from NASA's Mars Reconnaisance Orbiter (MRO) shows one possible place where sand grains are being produced on Mars today.1 -
thesunmoonandstars wrote: »http://www.bbc.co.uk/news/resources/idt-sh/disruptors_the_new_space_race
Saw a blurb about this a week ago on tv and thought I'd share the article. Not sure if it will interest anyone, but it's space related.
Excellent article! Thanks!
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Destructive Northern California Fires Seen in New NASA Satellite Image
The major fires burning in Northern California's wine country continue to burn relentlessly, forcing additional mass evacuations. The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument on NASA's Terra satellite acquired this image the morning of Oct. 12, 2017.
The fires have consumed hundreds of thousands of acres, resulting in significant loss of life, injuries and heavy property losses. The city of Santa Rosa is in the upper left corner; Napa is in the upper right; and Sonoma is in the center. In the image, vegetation is depicted in red and smoke is blue-gray. Active fires and hotspots, detected on ASTER's thermal infrared channels, are in yellow. The background colors have been subdued to make the yellow hotspots more apparent.
The image covers an area of 35 by 57 miles (57 by 91 kilometers) and is located near 38.3 degrees north, 122.5 degrees west.1 -
_barefoot_ wrote: »_barefoot_ wrote: »Pretty amazing how the moons don't fall due to it being heavy.
By the way .... I was joking on that comment ,
You never get my jokes
Classic-after-the-fact-pretend-it's-a-joke.0 -
LIGO Detects Fierce Collision of Neutron Stars for the First Time
https://www.nytimes.com/2017/10/16/science/ligo-neutron-stars-collision.html
Astronomers announced on Monday that they had seen and heard a pair of dead stars collide, giving them their first glimpse of the violent process by which most of the gold and silver in the universe was created.
The collision, known as a kilonova, rattled the galaxy in which it happened 130 million light-years from here in the southern constellation of Hydra, and sent fireworks across the universe.
On Aug. 17, the event set off sensors in space and on Earth, as well as producing a loud chirp in antennas designed to study ripples in the cosmic fabric.
It sent astronomers stampeding to their telescopes, in hopes of answering one of the long-sought mysteries of the universe.
An artist’s rendering of the merger of two neutron stars from Aug. 17.
This illustration shows the hot, dense, expanding cloud of debris stripped from neutron stars just before they collided.
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Puerto Rico From the Space Station
NASA astronaut Joe Acaba photographed Puerto Rico from the cupola of the International Space Station on Oct. 12, 2017. Sharing the image with his followers on social media, he wrote, "Finally a chance to see the beautiful island of Puerto Rico from @Space_Station. Continued thoughts throughout the recovery process."
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NASA astronaut Randy Bresnik (bottom center) is dwarfed by a set of basketball court-sized solar arrays and the Earth in the background during a spacewalk on Oct. 5, 2017.1 -
(Sept. 15, 2017) --- This night time view of southern Europe prominently features the “boot” of Italy, the home of current Expedition 53 crew member Paolo Nespoli of the European Space Agency.0 -
Jovian Moon Shadow
Jupiter’s moon Amalthea casts a shadow on the gas giant planet in this image captured by NASA’s Juno spacecraft.1 -
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MeeseeksAndDestroy wrote: »A teaspoon of neutron star weighs around 10 million tons
You know I've never tried to see how much weight my teaspoons could hold.0 -
Hubble Unravels a Twisted Cosmic Knot
This Hubble image shows what happens when two galaxies become one. The twisted cosmic knot seen here is NGC 2623 — or Arp 243 — and is located about 250 million light-years away in the constellation of Cancer (The Crab).1 -
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Night Earth observations taken by Expedition 44 crewmember.
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MeeseeksAndDestroy wrote: »MeeseeksAndDestroy wrote: »A teaspoon of neutron star weighs around 10 million tons
You know I've never tried to see how much weight my teaspoons could hold.
Mine buckle under straight-from-the-freezer ice cream so I doubt they can handle much
Have you tried using your hands to get the ice cream out of the freezer?1 -
Artificial intelligence finds 56 new gravitational lens candidates
Astronomers search for gravitational lenses because they help in the research of dark matter.
A group of astronomers from the universities of Groningen, Naples and Bonn has developed a method that finds gravitational lenses in enormous piles of observations. The method is based on the same artificial intelligence algorithm that Google, Facebook and Tesla have been using in the last years.
https://phys.org/news/2017-10-artificial-intelligence-gravitational-lens-candidates.html
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https://www.youtube.com/watch?v=gtZ7OVoI2nc
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