Showing posts with label spacecraft. Show all posts
Showing posts with label spacecraft. Show all posts
Sunday, 24 September 2017
Jupiter seen by Juno spacecraft in Near Infrared
Jupiter seen by Juno spacecraft in Near Infrared

This composite infrared image of Jupiter reveals haze particles over a range of altitudes, as seen in reflected sunlight. It was taken using the Gemini North Telescopes Near-InfraRed Imager (NIRI) on May 18, 2017, in collaboration with the investigation of Jupiter by NASAs 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. Jupiters 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 Jupiters convective region.
The GRS is one of the highest-altitude features in Jupiters 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 (yellow), and 2.275 microns (red).
Image Credit: Gemini Observatory/AURA/NASA/JPL-Caltech
Explanation from: https://photojournal.jpl.nasa.gov/catalog/PIA21713
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Saturday, 5 August 2017
Earth and Dragon Spacecraft seen from the International Space Station
Earth and Dragon Spacecraft seen from the International Space Station

NASA astronaut Jack Fischer photographed the SpaceX Dragon capsule as it reentered Earths atmosphere before splashing down in the Pacific Ocean west of Baja California at 8:12 a.m. EDT, July 3, 2017. Fischer commented, "Beautiful expanse of stars-but the �long� orange one is SpaceX-11 reentering! Congrats team for a successful splashdown & great mission!"
A variety of technological and biological studies conducted on the International Space Station are returning in Dragon. The Fruit Fly Lab-02 experiment seeks to better understand the effects of prolonged exposure to microgravity on the heart. Samples from the Systemic Therapy of NELL-1 for osteoporosis will return as part of an investigation using rodents as models to test a new drug that can both rebuild bone and block further bone loss, improving crew health. The Cardiac Stem Cells experiment investigated how microgravity affects stem cells and the factors that govern stem cell activity.
The Dragon spacecraft launched June 3 on a SpaceX Falcon 9 rocket from historic Launch Complex 39A at NASA�s Kennedy Space Center in Florida, and arrived at the station June 5.
Image Credit: NASA
Explanation from: https://www.nasa.gov/image-feature/dragon-returns-space-station-science-to-earth
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