Thursday, September 20, 2018

Wednesday, September 19, 2018

Deep Look



Today's Astronomy Picture of the Day probes the subtle beauty of IC 5146 in the constellation of Cygnus. Astounding work!

Tuesday, September 18, 2018

Monday, September 17, 2018

Saturday, September 15, 2018

The Cruel Sky



Today's Astronomy Picture of the Day shows the snow-capped peak of Mont Blanc, scuddering clouds, the serene Milky Way and a transient interloper in the form of a fleeting Perseid.

Friday, September 14, 2018

HALO



Today's Astronomy Picture of the Day breaks down the details of a Sun Halo. "Mouseover" the image in the link to see what is what.

Thursday, September 13, 2018

The Crowded Sky



Today's Astronomy Picture of the Day shows a crowded sky. Off in the galactic distance, the nebula and rich starfields of the constellation of Auriga. Close in, relatively speaking, a visitor to the inner system, Comet 21P/Giacobini-Zinner.

Wednesday, September 12, 2018

Phasing



Today's Astronomy Picture of the Day is a short video showing the nightly shifts in the appearance of the Moon. Click on the link in order to see the video.

Tuesday, September 11, 2018

Monday, September 10, 2018

View from the Ridge



Today's Astronomy Picture of the Day is a short video showing the full panoramic view from Vera Rubin Ridge of Mount Sharp, the current area of operations for MSL Curiosity. Click on the link to see the video (image above is static).

Saturday, September 8, 2018

Falling, Falling



Today's Astronomy Picture of the Day shows a Perseid meteor captured "live" as it burned up in our atmosphere this past August.

Friday, September 7, 2018

Hex



Today's Astronomy Picture of the Day shows the North Polar Hexagon of Saturn, as taken by the Cassini Orbiter in 2012. And you thought Jupiter's Great Red Spot was a planetary oddity!

Thursday, September 6, 2018

Bowshock Filaments



Today's Astronomy Picture of the Day shows filaments of the Veil Nebula, the "western" part of the overall structure. The nebula is remnants of a supernova event, marking the progress of the shockwave through interstellar space.

Wednesday, September 5, 2018

On the Edge



Today's Astronomy Picture of the Day is of NGC 3682, a spiral galaxy in the constellation of Leo. I will gladly pay you Tuesday for a cheeseburger today.

Tuesday, September 4, 2018

Lava Moon



Today's Astronomy Picture of the Day shows a full Moon rising over a lava fountain. It puts me in mind of the birth of the Moon as depicted in the cheesy classic One Million Years B.C. and the birth of a second moon as depicted in the equally cheesy classic Crack in the World. Ah, the cinema!


Monday, September 3, 2018

Halo Effect



Today's Astronomy Picture of the Day is an image from the lamented Cassini Orbiter, taken in 2017, and combined with an image from the venerable (and still functioning, long may it do so!) Hubble Space Telescope.

What is happening on Saturn? Auroral activity. Imagine being on the "surface" (well, maybe in a balloon!) and being able to view both those auroras and those rings!

Sunday, September 2, 2018

Outburst



Today's Astronomy Picture of the Day is a short video showing a 2003 flare on our home star. Currently in a "quiet period", the Sun can surprise us with outbursts. In fact, today marks one of the most powerful outbursts, in the year 1859.

Saturday, September 1, 2018

Wisps



Today's Astronomy Picture of the Day combines data from Earth-observing satellites to show the presence and pathways of sea salt aerosols, carbon aerosols and dust aerosols across our blue planet.

Friday, August 31, 2018

Mars AS BIG AS the Moon



Today's Astronomy Picture of the Day shows the Angry Red Planet, still bright and (relatively) close to us in the night skies. For once we seem to have escaped the (false) internet meme that Mars would be "as big as the Moon!" during opposition.

Surface features are starting to peak through as the global dust storm subsides. Still no word (knock on wood) from Opportunity!

Thursday, August 30, 2018

Deep Reds and Subtle Blues



Today's Astronomy Picture of the Day brings us NGC 6914 in the constellation of Cygnus. What a mix of reds and blues, stars, gas and dust!

Tuesday, August 28, 2018

Glow



Today's Astronomy Picture of the Day brings us the glow of car lights scattered through dense fog and the biological glow of small organisms in the water along the coast of Oregon. Above, the glow of the Milky Way.