In This Amazing Hubble Space Telescope Image, A Blue Bubble-like Nebula Surrounds A Wolf–Rayet Star

Auroras Colorful Veil Over Earth : NASA astronaut Scott Kelly shared this photograph on social media, taken from the International Space Station on August 15, 2015. Kelly wrote, #Aurora trailing a colorful veil over Earth this morning. Good morning from @space_station! #YearInSpace

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Any minute now, NASA’s Juno will be entering Jupiter’s orbit. So here is a photo of an aurora on Jupiter.

Extraordinary Solar Halos via NASA https://go.nasa.gov/2LtZach

Spirit sends one of those pictures that looks like it could come from the red rock deserts of the American West, but actually shows part of the landscape in Gusev crater, a mere 60 million miles away. Credit: NASA

The dune field at the center of Victoria Crater, seen in a new false-color shot. Credit: NASA

Details of the Omega Nebula image credit: European Southern Observatory

Nearby dust clouds in the Milky Way

Credit: NASA, ESA, and The Hubble Heritage Team (STScI/AURA)

The best photographs that the Hubble space telescope has ever taken.

1. Sombrero galaxy

2.  V838 Monocerotis

3. Jupiter’s great red spot

4. Carina nebula

5. Interacting galaxies

6. Pillars of creation

7. Cat’s eye nebula

8.  Planetary Nebula NGC 5189

9.  Abell 2744 Frontier Field

(Source)

Planetary Nebula NGC 2818 from Hubble.

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Light Echoes from V838 Mon

For reasons unknown, star V838 Mon’s outer surface suddenly greatly expanded with the result that it became the brightest star in the entire Milky Way Galaxy in January 2002. Then, just as suddenly, it faded. A stellar flash like this has never been seen before.

It’s true that supernovae and novae expel matter out into space. But while the V838 Mon flash appears to expel material into space, what is seen here is actually an outwardly moving light echo of the bright flash. In a light echo, light from the flash is reflected by successively more distant rings in the ambient interstellar dust that already surrounded the star.

V838 Mon lies about 20,000 light years away toward the constellation of Monoceros the unicorn. In this Hubble Space Telescope image from February 2004, the light echo is about six light years in diameter.

Image Credit: NASA, APOD, ESA, H. E. Bond (STScI)

Comet ISON

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