Space
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the next 20 years are going to be exciting as feck!!0
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MrStabbems wrote: »the next 20 years are going to be exciting as feck!!
The last 20 years certainly have been. And the 20 years before that. And...0 -
Venus Cloud Tops Viewed by Hubble. This is a NASA Hubble Space Telescope ultraviolet-light image of the planet Venus, taken on January 24 1995, when Venus was at a distance of 70.6 million miles 113.6 million kilometers from Earth.
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Venus - False Color of Bereghinya Planitia
This false color image from NASA Magellan spacecraft shows a portion of Bereghinya Planitia plains in the northern hemisphere of Venus.1 -
View of STS-134 MS Feustel during EVA-1
View of STS-134 Mission Specialist (MS-3) Andrew Feustel working to install a new Materials International Space Station Experiment (MISSE) on the EXPRESS (Expedite the Processing of Experiments to Space Station) Logistics Carrier 2 (ELC2) during the first session of Extravehicular Activity (EVA-1).1 -
Flyaround view of the ISS taken from STS-123 Space Shuttle Endeavor
View of Materials International Space Station Experiment (MISSE) 6 Passive Experiment Container (PEC) on European Laboratory/Columbus. Photo was taken during flyaround of STS-123 Space Shuttle Endeavor.1 -
Springtime on Mars: Hubble Best View of the Red Planet
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Diagram of Lake Stratification on Mars
This diagram presents some of the processes and clues related to a long-ago lake on Mars that became stratified, with the shallow water richer in oxidants than deeper water was.
The sedimentary rocks deposited within a lake in Mars' Gale Crater more than three billion years ago differ from each other in a pattern that matches what is seen in lakes on Earth. As sediment-bearing water flows into a lake, bedding thickness and particle size progressively decrease as sediment is deposited in deeper and deeper water as seen in examples of thick beds (PIA19074) from shallowest water, thin beds (PIA19075) from deeper water and even thinner beds (PIA19828) from deepest water.
At sites on lower Mount Sharp, inside the crater, measurements of chemical and mineral composition by NASA's Curiosity Mars rover reveal a clear correspondence between the physical characteristics of sedimentary rock from different parts of the lake and how strongly oxidized the sediments were. Rocks with textures indicating that the sediments were deposited near the edge of a lake have more strongly oxidized composition than rocks with textures indicating sedimentation in deep water.
For example, the iron mineral hematite is more oxidized than the iron mineral magnetite. An explanation for why such chemical stratification occurs in a lake is that the water closer to the surface is more exposed to oxidizing effects of oxygen in the atmosphere and ultraviolet light.
On Earth, a stratified lake with a distinct boundary between oxidant-rich shallows and oxidant-poor depths provides a diversity of environments suited to different types of microbes. If Mars has ever hosted microbial live, the stratified lake at Gale Crater may have similarly provided a range of different habitats for life.1 -
Sedimentary Signs of a Martian Lakebed
This evenly layered rock photographed by the Mast Camera Mastcam on NASA Curiosity Mars Rover on Aug. 7, 2014, shows a pattern typical of a lake-floor sedimentary deposit not far from where flowing water entered a lake.1 -
Martian Rock Evidence of Lake Currents
Cross-bedding seen in the layers of this Martian rock is evidence of movement of water recorded by the waves or ripples of loose sediment the water passed over, such as a current in a lake.
This image is from NASA Curiosity Mars rover.1 -
Mimas Dwarfed
From high above Saturn's northern hemisphere, NASA's Cassini spacecraft gazes over the planet's north pole, with its intriguing hexagon and bullseye-like central vortex.
Saturn's moon Mimas is visible as a mere speck near upper right. At 246 miles (396 kilometers across) across, Mimas is considered a medium-sized moon. It is large enough for its own gravity to have made it round, but isn't one of the really large moons in our solar system, like Titan. Even enormous Titan is tiny beside the mighty gas giant Saturn. This view looks toward Saturn from the sunlit side of the rings, from about 27 degrees above the ring plane.
The image was taken in green light with the Cassini spacecraft wide-angle camera on March 27, 2017.
The view was acquired at a distance of approximately 617,000 miles (993,000 kilometers) from Saturn.
Image scale is 37 miles (59 kilometers) per pixel. Mimas' brightness has been enhanced by a factor of 3 in this image to make it easier to see.2 -
NASA's MISR Spots Alaskan Volcano's Latest Eruption
The tiny Aleutian island of Bogoslof in Alaska, erupting regularly since December 2016, produced fresh activity on Sunday, May 28, 2017.
Bogoslof is a stratovolcano fueled by the subduction of the Pacific Plate under the North American Plate and forms part of the larger Aleutian Arc, which includes more than 60 volcanoes on the Aleutian Islands and the Aleutian Range on the Alaska mainland.
Previous to its recent period of activity, Bogoslof had last erupted in 1992, and its above-water surface area was a mere 0.11 square miles (0.29 square kilometers). As of March 11, the most recent data available, the area of the island had tripled to 0.38 square miles (0.98 square kilometers).
The event on May 28 produced an ash cloud that reached 40,000 feet (12 km) in altitude, causing the Alaskan Volcano Observatory to issue a red alert for air travel in the area. Volcanic ash can cause major damage to aircraft engines, and the region is close to several major air routes between North America and Asia.
On May 28, 2017, at approximately 2:23 p.m. local time, NASA's Terra satellite passed over Bogoslof, less than 10 minutes after the eruption began.
MISR has nine cameras that view Earth at different angles. It takes slightly less than seven minutes for all nine cameras to view the same location on Earth. An animation made from the images from the nine MISR cameras, captured between 2:19 and 2:26 p.m., demonstrates how the angled views give a glimpse of the underside of the growing plume of volcanic ash, showing the eruption column widening into the cloud at the top. The animation is available at https://photojournal.jpl.nasa.gov/catalog/PIA21655
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I stood on the surface of Mars on Sunday.
Well, not really... but hubby has a VR headset and there was a "room" available that was built from NASA's data on the Martian surface. I stood next to Curiosity, and moved around a bit admiring some views and reading some info. It was awesome!
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I stood on the surface of Mars on Sunday.
Well, not really... but hubby has a VR headset and there was a "room" available that was built from NASA's data on the Martian surface. I stood next to Curiosity, and moved around a bit admiring some views and reading some info. It was awesome!
I wanna go! Can I? Please?0 -
vikinglander wrote: »I stood on the surface of Mars on Sunday.
Well, not really... but hubby has a VR headset and there was a "room" available that was built from NASA's data on the Martian surface. I stood next to Curiosity, and moved around a bit admiring some views and reading some info. It was awesome!
I wanna go! Can I? Please?
Come on over!0 -
vikinglander wrote: »I stood on the surface of Mars on Sunday.
Well, not really... but hubby has a VR headset and there was a "room" available that was built from NASA's data on the Martian surface. I stood next to Curiosity, and moved around a bit admiring some views and reading some info. It was awesome!
I wanna go! Can I? Please?
Come on over!
I meant, 'I really wanna go'...to Mars!0 -
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A Cauldron of Stars at the Galaxy Center
This dazzling infrared image from NASA Spitzer Space Telescope shows hundreds of thousands of stars crowded into the swirling core of our spiral Milky Way galaxy.3 -
vikinglander wrote: »vikinglander wrote: »I stood on the surface of Mars on Sunday.
Well, not really... but hubby has a VR headset and there was a "room" available that was built from NASA's data on the Martian surface. I stood next to Curiosity, and moved around a bit admiring some views and reading some info. It was awesome!
I wanna go! Can I? Please?
Come on over!
I meant, 'I really wanna go'...to Mars!
Sign up here!
http://www.mars-one.com/0 -
ya'll see the black hole merger gravity ripple story?0
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Flaring Red Dwarf Star (Illustration)
This illustration shows a red dwarf star orbited by a hypothetical exoplanet.
Red dwarfs tend to be magnetically active, displaying gigantic arcing prominences and a wealth of dark sunspots. Red dwarfs also erupt with intense flares that could strip a nearby planet's atmosphere over time, or make the surface inhospitable to life as we know it.
By mining data from the Galaxy Evolution Explorer (GALEX) spacecraft, a team of astronomers identified dozens of flares at a range of durations and strengths. The team measured events with less total energy than many previously detected flares from red dwarfs.
This is important because, although individually less energetic and therefore less hostile to life, smaller flares might be much more frequent and add up over time to produce a cumulative effect on an orbiting planet.1 -
A delicate ribbon of gas floats eerily in our galaxy. This image, taken by NASA Hubble Space Telescope, is a very thin section of a supernova remnant caused by a stellar explosion that occurred more than 1,000 years ago.
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This photograph is a Hubble Space Telescope (HST) image of a sky full of glittering jewels. The HST peered into the Sagittarius star cloud, a narrow dust free region, providing this spectacular glimpse of a treasure chest full of stars.
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Hubble Views Ancient Storm in the Atmosphere of Jupiter - Montage
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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.1 -
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Key Locations Studied at 'Pahrump Hills' on Mars
NASA's Curiosity Mars rover examined a mudstone outcrop area called "Pahrump Hills" on lower Mount Sharp, in 2014 and 2015.
This view shows locations of some targets the rover studied there.
The blue dots indicate where drilled samples of powdered rock were collected for analysis. The rover drilled a sample of rock powder at "Confidence Hills" in September 2014 and analyzed it with internal laboratory instruments.
Then the mission conducted a walkabout survey up the slope, along the route indicated in yellow, stopping for close inspection at the red-dot locations.
Observations from the walkabout were used to choose where to take additional drilled samples for analysis during a second pass up the slope.
The "Mojave 2" sample was collected in January 2015 and the "Telegraph Peak" one in February 2015.
This view of the outcrop and other portions of Mount Sharp beyond is a mosaic of images taken by the rover's Mast Camera (Mastcam) in September 2014.1 -
Curiosity Rock or Soil Sampling Sites on Mars, Through November 2016
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This graphic maps locations of the sites where NASA's Curiosity Mars rover collected its first 19 rock or soil samples for analysis by laboratory instruments inside the vehicle. It also presents images of the drilled holes where 15 rock-powder samples were acquired. Curiosity scooped two soil samples at each of the other two sites: Rocknest and Gobabeb. The diameter of each drill hole is about 0.6 inch (1.6 centimeters), slightly smaller than a U.S. dime.
The images used here are raw color, as recorded by the rover's Mars Hand Lens Imager (MAHLI) camera. Notice the differences in color of the material at different drilling sites. For the map, north is toward the upper left corner. The scale bar represents 2 kilometers (1.2 miles). The base map is from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter. The latest sample site included is "Sebina,"where Curiosity drilled into bedrock of the Murray formation on Oct. 20, 2016, during the 1,495th Martian day, or sol, of the mission.
Curiosity landed in August 2012 on the plain (named Aeolis Palus) near Mount Sharp (or Aeolis Mons). The drilling dates for the first 13 rock samples collected are, by location: "John Klein" on Feb. 8, 2013 (Sol 182); "Cumberland" on May 19, 2013 (Sol 279); "Windjana" on May 5, 2014 (Sol 621); "Confidence Hills" on Sept. 24, 2014 (Sol 759); "Mojave" on Jan. 29, 2015 (Sol 882); "Telegraph Peak" on Feb. 24, 2015 (Sol 908); "Buckskin" on July 30, 2015 (Sol 1060); "Big Sky" on Sept. 29, 2015 (Sol 1119); "Greenhorn" on Oct. 18, 2015 (Sol 1137); "Lubango" on April 23, 2016 (Sol 1320); "Okoruso" on May 5, 2016 (Sol 1332); "Oudam" on June 4, 2016 (Sol 1361); "Quela" on Sept. 18, 2016 (Sol 1464).2 -
Site of Curiosity Second Bite of Mount Sharp
Gray cuttings from Curiosity drilling into a target called Mojave 2 are visible surrounding the sample-collection hole in this image from NASA Curiosity rover.1
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