Space
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@MeeseeksAndDestroy wrote: »SomebodyWakeUpHIcks wrote: »This shows the relative distance of the earth from the sun and their comparable sizes.
All 4 earths even
And not a devil among them!0 -
Orion Dreamy Stars
A colony of hot, young stars is stirring up the cosmic scene in this new picture from NASA Spitzer Space Telescope. The image shows the Orion nebula, a happening place where stars are born.3 -
Water Around a Carbon Star
This ESA Herschel image shows IRC+10216, also known as CW Leonis, a star rich in carbon where astronomers were surprised to find water. This color-coded image shows the star, surrounded by a clumpy envelope of dust.2 -
Orion Dreamy Stars
A colony of hot, young stars is stirring up the cosmic scene in this new picture from NASA Spitzer Space Telescope. The image shows the Orion nebula, a happening place where stars are born.
I need "A colony of hot, young stars ... stirring up [a] cosmic scene..."1 -
Slipher Crater: Fractured Moon
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From a Million Miles Away, NASA Camera Shows Moon Crossing Face of Earth
This animation still image shows the far side of the moon, illuminated by the sun, as it crosses between the DISCOVR spacecraft's Earth Polychromatic Imaging Camera (EPIC) camera and telescope, and the Earth - one million miles away.
Credits: NASA/NOAA A NASA camera aboard the Deep Space Climate Observatory (DSCOVR) satellite captured a unique view of the moon as it moved in front of the sunlit side of Earth last month. The series of test images shows the fully illuminated “dark side” of the moon that is never visible from Earth.
The images were captured by NASA’s Earth Polychromatic Imaging Camera (EPIC), a four megapixel CCD camera and telescope on the DSCOVR satellite orbiting 1 million miles from Earth. From its position between the sun and Earth, DSCOVR conducts its primary mission of real-time solar wind monitoring for the National Oceanic and Atmospheric Administration (NOAA).2 -
Looks like a hurricane was heading up Baja California at the time this was taken.From a Million Miles Away, NASA Camera Shows Moon Crossing Face of Earth
This animation still image shows the far side of the moon, illuminated by the sun, as it crosses between the DISCOVR spacecraft's Earth Polychromatic Imaging Camera (EPIC) camera and telescope, and the Earth - one million miles away.
Credits: NASA/NOAA A NASA camera aboard the Deep Space Climate Observatory (DSCOVR) satellite captured a unique view of the moon as it moved in front of the sunlit side of Earth last month. The series of test images shows the fully illuminated “dark side” of the moon that is never visible from Earth.
The images were captured by NASA’s Earth Polychromatic Imaging Camera (EPIC), a four megapixel CCD camera and telescope on the DSCOVR satellite orbiting 1 million miles from Earth. From its position between the sun and Earth, DSCOVR conducts its primary mission of real-time solar wind monitoring for the National Oceanic and Atmospheric Administration (NOAA).
A.C.E. Certified Personal and Group Fitness Trainer
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Been in fitness for 30 years and have studied kinesiology and nutrition
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Martian Rocks Lining Possible Ancient Channel (Enhanced Color)
NASA's Mars Exploration Rover Opportunity took the component images of this enhanced-color scene during the mission's "walkabout" survey of an area just above the top of "Perseverance Valley," in preparation for driving down the valley.
The location is just outside the crest line of the western rim of Endeavour Crater, looking toward the northwest. The rim crest at the top of Perseverance Valley is off the scene to the right. A swath across the top half of the image is lined with dark rocks, especially on the far side. The swath runs east-west, and one possible history under investigation is that it was a channel into a lake perched against the edge of the crater billions of years ago.
Another hypothesis is that the linear pattern of the rock piles is related to radial fractures from the impact that excavated Endeavour Crater. One goal of the walkabout is to determine whether a close look at the rocks will provide clues to the history of the site.
For scale, the width of the swath near the center of the image is roughly 30 feet (9 meters). Opportunity's panoramic camera (Pancam) recorded this scene on June 3, 2017, during the 4,749th Martian day, or sol, of the rover's work on Mars. The enhanced color helps make differences in surface materials visible.
The view merges exposures taken through three of the Pancam's color filters, centered on wavelengths of 753 nanometers (near-infrared), 535 nanometers (green) and 432 nanometers (violet).1 -
Kerwan in Full
This image from NASA's Dawn spacecraft shows the largest crater on Ceres, called Kerwan.
The crater has an appearance scientists refer to as "relaxed," meaning its sharp features have softened since Kerwan formed. Its overall shape looks something like a pancake, especially when viewed near Ceres' limb.
The origin of its polygonal shape is not yet well understood; it might be due to large faults in the subsurface generated by other large impacts, as has been suggested for other craters.
The smaller crater named Insitor sits in the center of Kerwan. The dark material seen at top right is ejecta from Dantu crater. At 174 miles (280 kilometers) wide, Kerwan is so large that it would have taken about 50 images at Dawn's low-altitude mapping orbit (called LAMO, at 240 miles or 385 kilometers altitude) to cover the crater from one side to the other.
Kerwan was also too wide to fit within the camera's field of view at Dawn's high-altitude mapping orbit (called HAMO, at 915 miles, 1,470 kilometers). It fit nicely into this frame from Dawn's Survey phase (an altitude of 2,700 miles or 4,400 kilometers), taken shortly after the spacecraft entered orbit in 2015.
Kerwan takes its name from the Hopi spirit of sprouting maize.
This picture was obtained on June 12, 2015.1 -
Coils of Magnetic Field Lines
A smallish solar filament looks like it collapsed into the sun and set off a minor eruption that hurled plasma into space (June 20, 2017). Then, the disrupted magnetic field immediately began to reorganize itself, hence the bright series of spirals coiling up over that area.
The magnetic field lines are made visible in extreme ultraviolet light as charged particles spin along them. Also of interest are the darker, cooler strands of plasma being pulled and twisted at the edge of the sun just below the active region. The activity here is in a 21-hour period.
Movies are available at https://photojournal.jpl.nasa.gov/catalog/PIA217642 -
anyone see the gecko grips? they use van der waals forces! I haven't heard that term used since college!
very clever.0 -
Three of Saturn's small ring moons
This montage of views from NASA's Cassini spacecraft shows three of Saturn's small ring moons: Atlas, Daphnis and Pan at the same scale for ease of comparison. Two differences between Atlas and Pan are obvious in this montage. Pan's equatorial band is much thinner and more sharply defined, and the central mass of Atlas (the part underneath the smooth equatorial band) appears to be smaller than that of Pan. Images of Atlas and Pan taken using infrared, green and ultraviolet spectral filters were combined to create enhanced-color views, which highlight subtle color differences across the moons' surfaces at wavelengths not visible to human eyes. (The Daphnis image was colored using the same green filter image for all three color channels, adjusted to have a realistic appearance next to the other two moons.)
All of these images were taken using the Cassini spacecraft narrow-angle camera. The images of Atlas were acquired on April 12, 2017, at a distance of 10,000 miles (16,000 kilometers) and at a sun-moon-spacecraft angle (or phase angle) of 37 degrees. The images of Pan were taken on March 7, 2017, at a distance of 16,000 miles (26,000 kilometers) and a phase angle of 21 degrees. The Daphnis image was obtained on Jan. 16, 2017, at a distance of 17,000 miles (28,000 kilometers) and at a phase angle of 71 degrees. All images are oriented so that north is up.
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In this image, NASA's Mars Reconnaissance Orbiter (MRO) observes an impact crater with associated bright deposits that at first glance give the appearance of seasonal frost or ice accumulations. MRO has an onboard spectrometer called CRISM that can distinguish between ices and other minerals. Unfortunately, there is currently no coverage of this particular spot. However, it can be deduced through several lines of evidence that this is, in fact, not ice. Just like Earth, Mars experiences seasons that change as the planet orbits the Sun.
Seasonal changes are most apparent at the higher latitudes. As these regions in each hemisphere enter their respective summer seasons, the Sun rises higher in the Martian sky causing frost and ice to sublimate, and illuminate more features across the landscape. As the high latitudes of each hemisphere move toward their respective winters, the days (called "sols") grow shorter and the sun hangs low on the horizon, giving rise to prolonged periods of cold, darkness, and frost accumulation.
First, it should be noted that at the time this image was taken, the Southern hemisphere is at the end of the summer season, so any frost or ice deposits have long since sublimated away.
Second, numerous HiRISE images of seasonal targets show that ice accumulates on pole-facing slopes. The deposits in question are situated on a slope that faces the equator, and would not accumulate deposits of frost.
Thus, it can be concluded that these exposures are light-toned mineral deposits.
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ROSA deploy
The Roll-Out Solar Array (ROSA) is a new type of solar panel that rolls open in space like a party favor and is more compact than current rigid panel designs. The ROSA investigation tests deployment and retraction, shape changes when the Earth blocks the sun, and other physical challenges to determine the array’s strength and durability.
ROSA has the potential to replace solar arrays on future satellites, making them more compact and lighter weight. Satellite radio and television, weather forecasting, GPS and other services used on Earth would all benefit from high-performance solar arrays.1 -
Jovey McJupiterface
JunoCam images aren't just for art and science -- sometimes they are processed to bring a chuckle.
This image, processed by citizen scientist Jason Major, is titled "Jovey McJupiterface."
By rotating the image 180 degrees and orienting it from south up, two white oval storms turn into eyeballs, and the "face" of Jupiter is revealed.
The original image was acquired by JunoCam on NASA's Juno spacecraft on May 19, 2017 at 11:20 a.m. PT (2: 20 p.m. ET) from an altitude of 12,075 miles (19,433 kilometers).
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This image captured by NASA's 2001 Mars Odyssey spacecraft looks like a piece of abstract art.
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This composite, false-color infrared image of Jupiter reveals haze particles over a range of altitudes, as seen in reflected sunlight. It was taken using the Gemini North Telescope's Near-InfraRed Imager (NIRI) on May 18, 2017, in collaboration with the investigation of Jupiter by NASA's Juno mission. Juno completed its sixth close approach to Jupiter a few hours after this observation.
The multiple filters corresponding to each color used in the image cover wavelengths between 1.69 microns and 2.275 microns. Jupiter's Great Red Spot (GRS) appears as the brightest (white) region at these wavelengths, which are primarily sensitive to high-altitude clouds and hazes near and above the top of Jupiter's convective region. The GRS is one of the highest-altitude features in Jupiter's atmosphere. Narrow spiral streaks that appear to lead into it or out of it from surrounding regions probably represent atmospheric features being stretched by the intense winds within the GRS, such as the hook-like structure on its western edge (left side). Some are being swept off its eastern edge (right side) and into an extensive wave-like flow pattern, and there is even a trace of flow from its northern edge.
Other features near the GRS include the dark block and dark oval to the south and the north of the eastern flow pattern, respectively, indicating a lower density of cloud and haze particles in those locations. Both are long-lived cyclonic circulations, rotating clockwise -- in the opposite direction as the counterclockwise rotation of the GRS. A prominent wave pattern is evident north of the equator, along with two bright ovals, which are anticyclones that appeared in January 2017.
Both the wave pattern and the ovals may be associated with an impressive upsurge in stormy activity that has been observed in these latitudes this year. Another bright anticyclonic oval is seen further north. The Juno spacecraft may pass over these ovals, as well as the Great Red Spot, during its close approach to Jupiter on July 10, 2017, Pacific Time (July 11, Universal Time). High hazes are evident over both polar regions with much spatial structure not previously been seen quite so clearly in ground-based images.
The filters used for observations combined into this image admit infrared light centered on the following infrared wavelengths (and presented here in these colors): 1.69 microns (blue), 2.045 microns (cyan), 2.169 microns (green), 2.124 microns
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The Moons are the Stars
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Stars Adorn Orion Sword
This image from NASA Spitzer Space Telescope shows what lies near the sword of the constellation Orion -- an active stellar nursery containing thousands of young stars and developing protostars. Many will turn out like our sun.2 -
Infrared Spotlight on Orion Sword
This image composite outlines the region near Orion sword that was surveyed by NASA Spitzer Space Telescope white box. The Orion nebula, our closest massive star-making factory, is the brightest spot near the hunter sword.1 -
This image captured by NASA's 2001 Mars Odyssey spacecraft resembles a face staring back at the spacecraft.1 -
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A young star takes centre stage
With its helical appearance resembling a snail’s shell, this reflection nebula seems to spiral out from a luminous central star in this new NASA/ESA Hubble Space Telescope image.
The star in the centre, known as V1331 Cyg and located in the dark cloud LDN 981 — or, more commonly, Lynds 981 — had previously been defined as a T Tauri star. A T Tauri is a young star — or Young Stellar Object — that is starting to contract to become a main sequence star similar to the Sun.
What makes V1331Cyg special is the fact that we look almost exactly at one of its poles. Usually, the view of a young star is obscured by the dust from the circumstellar disc and the envelope that surround it. However, with V1331Cyg we are actually looking in the exact direction of a jet driven by the star that is clearing the dust and giving us this magnificent view.
This view provides an almost undisturbed view of the star and its immediate surroundings allowing astronomers to study it in greater detail and look for features that might suggest the formation of a verylow-mass object in the outer circumstellar disc.1 -
Dusty Dead Star
A composite image from NASA Chandra and Spitzer space telescopes shows the dusty remains of a collapsed star, a supernova remnant called G54.1+0.3. The white source at the center is a dead star called a pulsar.1 -
The Juno spacecraft will begin a historic pass over Jupiter, where it will be brought to under 9,000 kilometres above the heart of the Great Red Spot - humanity's closest ever look at the famous storm!
NASA's Juno spacecraft will be directly over the spot shortly after 10 p.m. ET on Monday, July 10, about 5,600 miles above the gas giant's cloud tops.
During the latter part of this historic encounter with Jupiter, the Juno spacecraft will fly directly over the Great Red Spot! Mission planners have predicted that it will be at an altitude of just 9,000 kilometers (5,600 miles) when it passes over the center of the storm. JunoCam will most definitely be on for this pass, along with another essential, the Microwave Radiometer (MWR), which will be making its second performance of the mission, after making its debut during Perijove 4 back in February. This will mean that the spacecraft will be oriented perfectly parallel to the planet, to allow the MWR to take proper data, facing the planet head-on. This is in contrast to how the spacecraft is normally oriented during these passes, with the spacecraft's fixed high-gain antenna being pointed directly at the Earth in order to conduct the Gravity Science experiment, resulting in the spacecraft being slightly at an angle to the planet. Since the high-gain antenna is facing away from the planet, only the lower-gain antennas on the spacecraft can be used for communications during the flyby; unsuitable for the Gravity Science experiment.
Alrighty, the moment you're waiting for: the numbers. On the day of the flyby, 11 July (or July 10), Jupiter will be 812.6 million kilometers from Earth. This means the time taken from a signal to travel from Earth to the Juno spacecraft will be 45 minutes. For Perijove 7, the operative "Earth time" will be "Spacecraft time" plus 45 minutes.
The spacecraft's pass over the north pole will occur at ~01:05 UTC spacecraft time on 11 July (~01:50 UTC Earth time). That is roughly 31-and-a-half hours from when this post was made. Closest approach to Jupiter during this historic flyby will occur an hour later, at exactly 01:55 UTC spacecraft time (02:40 UTC Earth time). The altitude of closest approach this time? 3,500 kilometers (2,200 miles). This is the closest predicted altitude ever for the mission so far, though the spacecraft has definitely been closer. The data read an altitude of 3,421 kilometers (2,126 miles) during Perijove 5, which was 1,000 km closer than that had originally anticipated. Nonetheless, the margin of error isn't too great that an accidental deorbit is possible, so you need not worry.
The speed of the spacecraft is predicted to exceed 209,000 kilometers per hour (130,000 miles per hour), according to Eyes on the Solar System. According to NASA, the traverse from closest approach to the heart of the Great Red Spot will only take 11 minutes and 33 seconds, travelling over 39,771 kilometers (24,713 miles) to get there; the equivalent of just under the circumference of the Earth. Juno will be travelling the distance of one circumnavigation around the Earth in just under 12 minutes. Amazing stuff. The critical phase of Perijove 7 will end when Juno passes over the south pole of Jupiter at ~03:10 UTC spacecraft time (~03:55 UTC Earth time), with the entire phase lasting 2 hours as per usual.4 -
I'm sure this is the right place to go for this. Who can tell me the relationship between dimensions 5-10 and the existence of dark matter and dark energy? Don't they both explain the same thing? Are they competing theories?0
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NASA has named some mysterious Jupiter cloud patterns after Morty from 'Rick and Morty"
APPARENT DISTURBANCE IN CLOUD PATTERN.1 -
Here’s every total solar eclipse happening in your lifetime. Is this year your best chance?
https://www.washingtonpost.com/graphics/national/eclipse/?utm_term=.82208760af12
On Aug. 21, a total solar eclipse will be visible from the continental United States. It’ll be the first to traverse coast to coast in nearly a century. There will be 69 total solar eclipses visible from somewhere on the planet in the next 100 years, but only a few will be visible from North America.2
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