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APOD - I kwartał 2017


Paether

Rekomendowane odpowiedzi

Wielki finał podróży Cassini - na Saturnie

 

(będzie)

Cassini's Grand Finale Tour at Saturn
Image Credit: NASA, JPL-Caltech

Explanation: Cassini is being prepared to dive into Saturn. The robotic spacecraft that has been orbiting and exploring Saturn for over a decade will end its mission in September with a spectacular atmospheric plunge. Pictured here is a diagram of Cassini's remaining orbits, each taking about one week. Cassini is scheduled to complete a few months of orbits that will take it just outside Saturn's outermost ring F. Then, in April, Titan will give Cassini a gravitational pull into Proximal orbits, the last of which, on September 15, will impact Saturn and cause the spacecraft to implode and melt. Cassini's Grand Finale orbits are designed to record data and first-ever views from inside the rings -- between the rings and planet -- as well as some small moons interspersed in the rings. Cassini's demise is designed to protect any life that may occur around Saturn or its moons from contamination by Cassini itself.

https://apod.nasa.gov/apod/image/1701/GrandFinale_Cassini_1600.jpg

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GrandFinale_Cassini_1600.jpg

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Pozwolę sobie na komentarz do wczorajszego zdjęcia.

APOD znowu mało "zdjęciowy".

 

Pozdrawiam

:helo::astro:

p.s.

Wrzucajcie Koleżanki i Koledzy jak nie ma (i Paether nie wrzuca).

"Kto rano wstaje ten APOD'a daje"

 

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GOES-16: Księżyc nad planetą Ziemia

(z satelity)


GOES-16: Moon over Planet Earth
Image Credit: NOAA, NASA

Explanation: Launched last November 19 from Cape Canaveral Air Force Station, the satellite now known as GOES-16 can now observe planet Earth from a geostationary orbit 22,300 miles above the equator. Its Advanced Baseline Imager captured this contrasting view of Earth and a gibbous Moon on January 15. The stark and airless Moon is not really the focus of GOES-16, though. Capable of providing a high resolution full disk image of Earth every 15 minutes in 16 spectral channels, the new generation satellite's instrumentation is geared to provide sharper, more detailed views of Earth's dynamic weather systems and enable more accurate weather forecasting. Like previous GOES weather satellites, GOES-16 will use the moon over our fair planet as a calibration target.


https://apod.nasa.gov/apod/image/1701/ab_moon_from_geo_orbit_med_res_jan_15_2017.jpg


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ab_moon_from_geo_orbit_med_res_jan_15_2017.jpg

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Wenus przez krople wody

Venus Through Water Drops
Image Credit & Copyright: John Bell

Explanation: Now the brilliant "star" in planet Earth's evening skies, Venus is captured in this creative astrophotograph. Taken with a close-focusing lens on January 18 from Milton Keynes, UK, it shows multiple images of the sky above the western horizon shortly after sunset. The images were created by water drops on a glass pane fixed to a tree. Surface tension has drawn the water drops into simple lens-like shapes. Refracting light, the drops create images that are upside-down, so the scene has been rotated to allow comfortable right-side up viewing of a macro-multiple-skyscape.

 

https://apod.nasa.gov/apod/image/1701/VenusBubbleJohnBell.jpg

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VenusBubbleJohnBell1024.jpg

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N159 w Wielkim Obłoku Magellana

N159 in the Large Magellanic Cloud
Image Credit: NASA, ESA, Hubble Space Telescope

Explanation: Over 150 light-years across, this cosmic maelstrom of gas and dust is not too far away. It lies south of the Tarantula Nebula in our satellite galaxy the Large Magellanic Cloud a mere 180,000 light-years distant. Massive stars have formed within. Their energetic radiation and powerful stellar winds sculpt the gas and dust and power the glow of this HII region, entered into the Henize catalog of emission stars and nebulae in the Magellanic Clouds as N159. The bright, compact, butterfly-shaped nebula above and left of center likely contains massive stars in a very early stage of formation. Resolved for the first time in Hubble images, the compact blob of ionized gas has come to be known as the Papillon Nebula.

https://apod.nasa.gov/apod/image/1701/potw1636aN159_HST_2048.jpg

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potw1636aN159_HST_1024.jpg

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Czerwona zorza nad Australią

Red Aurora Over Australia
Image Credit & Copyright: Alex Cherney (Terrastro, TWAN)

Explanation: Why would the sky glow red? Aurora. A solar storm in 2012, emanating mostly from active sunspot region 1402, showered particles on the Earth that excited oxygen atoms high in the Earth's atmosphere. As the excited element's electrons fell back to their ground state, they emitted a red glow. Were oxygen atoms lower in Earth's atmosphere excited, the glow would be predominantly green. Pictured here, this high red aurora is visible just above the horizon last week near Flinders, Victoria, Australia. The sky that night, however, also glowed with more familiar but more distant objects, including the central disk of our Milky Way Galaxy on the left, and the neighboring Large and Small Magellanic Cloud galaxies on the right. A time-lapse video highlighting auroras visible that night puts the picturesque scene in context. Why the sky did not also glow green remains unknown.

https://apod.nasa.gov/apod/image/1701/redaurora_cherney_1600.jpg

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apod_29_01_2017.jpg

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