These great hollow globes of artificial super-metals, and artificial transparent adamant, ranged in size from the earliest and smallest structures, which were no bigger than a very small asteroid, to spheres considerably larger than the Earth. (Olaf Stapledon, STAR MAKER)
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!
Wednesday, August 29, 2018
Variable Link
Today's Astronomy Picture of the Day brings us variable star RS Pup, embedded deep in a reflection nebula. RS Pup is a Cepheid Variable, a standard marker used to help to determine galactic distances.
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.
Monday, August 27, 2018
Shadow From Space
Today's Astronomy Picture of the Day shows the shadow of The Great Eclipse of 2017...from spaaaaacceeee!!!
Sunday, August 26, 2018
Saturday, August 25, 2018
Hurtling Stars
Today's Astronomy Picture of the Day shows ESO 137-001, a spiral galaxy passing through galaxy cluster Abell 3627. ESO 137-001 is moving so fast that it appears as a galactic comet and dust and gas forms a tail.
Friday, August 24, 2018
Double Messier
Today's Astronomy Picture of the Day shows Messier 20 and Messier 21 in the constellation of Sagittarius. Let's peer towards the center of our home galaxy, shall we?
Thursday, August 23, 2018
Interloper Between Heart and Soul
Today's Astronomy Picture of the Day shows the Heart and Soul Nebula with an interloper: Comet 21P/Giacobini-Zinner passes through the field of view. ISEE-3, known then as ICE, visited the comet in 1985.
Wednesday, August 22, 2018
Approach to Rubble
Today's Astronomy Picture of the Day shows an increasingly detailed view of asteroid 162173 Ryugu, as JAXA's Hayabusa 2 vehicle moves every closer.
Tuesday, August 21, 2018
Monday, August 20, 2018
Quiet Sun
Today's Astronomy Picture of the Day shows some activity on our Sun. Currently in the Solar Minimum, even fewer sunspots than expected are visible.
Sunday, August 19, 2018
Very Scary
Today's Astronomy Picture of the Day shows Asperitas clouds in the skies of New Zealand. Very scary looking, but not scary in actuality.
Saturday, August 18, 2018
Peeking In
Today's Astronomy Picture of the Day brings us the results of the hyper-extended Cassini Orbiter mission at Saturn. The large moon Titan, shrouded in clouds, has been a mystery. Now peek underneath!
Friday, August 17, 2018
Infalling
Today's Astronomy Picture of the Day shows a Perseid meteor and it's aftermath. Was somebody blowing smoke rings in space?
Thursday, August 16, 2018
Going Up, Going Down
Today's Astronomy Picture of the Day shows the early morning launch of the Parker Solar Probe on a Delta IV Heavy while the skies are lit by the occasional Perseid meteor.
Wednesday, August 15, 2018
Set the Controls for the Heart of the Sun
Today's Astronomy Picture of the Day shows the (early!) Sunday morning launch of a Delta IV Heavy carrying the Parker Solar Probe. There's just something spectacular about a night launch!
No space frog caught photobombing the launch this time!
Tuesday, August 14, 2018
Bridge Over Stellar Waters
Today's Astronomy Picture of the Day shows a cluster of galaxies, Messier 86 (also known as The Eyes Galaxies and Arp 120), in a larger cluster of galaxies, the Virgo Cluster, and part of Markarian's Chain of galaxies. What is in the image, ghostlike? Is it a bridge between two of the galaxies?
"Mouseover" the image in the link for a guide to the objects in the picture. This is also an area worth exploring, from binoculars to larger low power/rich field telescopes. Just wander around and look what you can find!
Monday, August 13, 2018
Shock!
Today's Astronomy Picture of the Day brings us NGC 2736, in the constellation of Vela. Popularly known as The Pencil Nebula (look at the images in that second link), this nebula is the result of a supernova which occurred some 11,000 years ago.
Sunday, August 12, 2018
Ruining the Shot
Today's Astronomy Picture of the Day shows a ruined astronomical shot. Or is it? A Perseid meteor passes through the frame dominated by Messier 31, The Andromeda Galaxy. Why do you think the meteor was green?
Saturday, August 11, 2018
Friday, August 10, 2018
Spirals on the Stream
Today's Astronomy Picture of the Day is a pretty spectacular spiral galaxy, NGC 6744, in the constellation of Pavo.
Thursday, August 9, 2018
Red and Blue
The title of today's Astronomy Picture of the Day says it plain: red planet, red Moon, red Mars. But also blue water and blue sky.
Wednesday, August 8, 2018
Perseids
Today's Astronomy Picture of the Day is a short video showing the Perseid meteor shower's path through our solar system.
Tuesday, August 7, 2018
Lunar Alps
Today's Astronomy Picture of the Day shows the Moon at moonrise, rising in a state of eclipse, over the Alps in France. Did you know there are also Alps on the Moon? (There are, however, no goats known to be on the Moon—enlarge the image to see what I mean!)
Monday, August 6, 2018
Cosmic Bombardment
Today's Astronomy Picture of the Day is a live (really!) view of what's going on above us. The skies are alive with incoming gamma rays!
Sunday, August 5, 2018
Heart
Today's Astronomy Picture of the Day is a (reprocessed and enhanced) view of the heart of the Orion Nebula taken by the Hubble Space Telescope.
Saturday, August 4, 2018
Along the Bulge
Today's Astronomy Picture of the Day takes us along the plane of the Milky Way, but now usually along the section we see (e.g., Sagittarius), but out towards the Northern Cross, or Cygnus.
Friday, August 3, 2018
Full Bloodmoon
Today's Astronomy Picture of the Day shows three moments in the recent lunar eclipse, from near totality, to totality, and the moment after.
Thursday, August 2, 2018
Timelapse Bloodmoon
Today's Astronomy Picture of the Day is a timed sequence of last week's "Bloodmoon" lunar eclipse over the Gulf of Poets in Italy.
Wednesday, August 1, 2018
Dusty Iris
Today's Astronomy Picture of the Day peers into the constellation of Cepheus and looks at the dusty environs of the Iris Nebula.