- Please enable JavaScript for a more complete user experience.
Links
- ABC's of Distances
- Algol minima calculator
- Asteroid impact simulator
- Astronomy Picture of the Day
- Atmospheric optics – halos, rainbows and sundogs
- Aurora oval activity
- Aurora tonight? Check the Kp index to find out
- Black holes FAQ
- Christopher Go's Jupiter site
- Clear Sky Clock – anywhere
- Clear Sky Clock – Duluth, MN area
- Heavens Above — see the space station
- JPL-HORIZONS — locate anything celestial
- Jupiter's Great Red Spot visibility times
- Jupiter's moons – where are they tonight?
- Moon Atlas – free software
- Moon atlases – mother lode
- Moon Globe for iPhone
- Moonrise, moonset, sunrise, sunset for anywhere
- Official U.S. time
- Road to Endeavour – Mars rover blog
- Space weather forecast
- Stellarium – free sky charting software
- The Nine Planets – A tour of the solar system
- The Ultimate Almanac of 21st century sky events
- Weekly updates on bright comets
-
Recent Posts
Recent Comments
- astrobob on Morning crescent moon anticipates weekend solar eclipse
- Doug on Morning crescent moon anticipates weekend solar eclipse
- astrobob on Complete viewing guide to Sunday’s annular solar eclipse
- astrobob on Complete viewing guide to Sunday’s annular solar eclipse
- Carolina on Complete viewing guide to Sunday’s annular solar eclipse
Archives
- May 2012
- April 2012
- March 2012
- February 2012
- January 2012
- December 2011
- November 2011
- October 2011
- September 2011
- August 2011
- July 2011
- June 2011
- May 2011
- April 2011
- March 2011
- February 2011
- January 2011
- December 2010
- November 2010
- October 2010
- September 2010
- August 2010
- July 2010
- June 2010
- May 2010
- April 2010
- March 2010
- February 2010
- January 2010
- December 2009
- November 2009
- October 2009
- September 2009
- August 2009
- July 2009
- June 2009
- May 2009
- April 2009
- March 2009
- February 2009
- January 2009
- December 2008
- November 2008
- October 2008
- September 2008
- August 2008
- July 2008
- June 2008
- May 2008
- April 2008
- March 2008
- February 2008
Meta
Monthly Archives: June 2008
Something easy, something hard, something early
Back in April we looked at the sky’s most famous double star, the pair of Mizar and Alcor in the bend of the Big Dipper’s Handle. They’re still out and make a good place to start for some summer star splitting. … Continue reading
Let the Earth fall away
Imagine what the sky would look like with the Earth out of the way. If you were an astronaut, say, somewhere between the Earth and moon, it would be easy. Since most of us have to remain on the planet, … Continue reading
Touched by a heavenly light
Crepuscular rays from the low, evening sun last week over Rice Lake Township — Bob King/Duluth News Tribune We’ve all seen them — those rays of sunlight or moonlight bursting through openings in the clouds. They look positively heavenly. They’re called … Continue reading
Firefly enchantment
Fireflies swoop and swerve beneath the beacon of Jupiter last night June 25. Photo taken with a 28mm lens at f/2.8, ISO 1600, 1-minute time exposure. — Bob King/Duluth News Tribune Wow, the fireflies were spectacular last night. I had … Continue reading
We’re going on a deep sky hunt
When my daughters were younger, one of their favorite books was about a hunt to find a bear in his cave called We’re Going on a Bear Hunt. To get there you had to surmount obstacles like muddy ground, a … Continue reading
Moon III basks in the king’s aura tonight
Small telescope view of Jupiter’s moons. The biggest and brightest moon, Ganymede, lies to the right or west of the planet tonight June 24. Jupiter is the brilliant "star" low in the southeast from 11 o’clock on. A pair of steadily-held binoculars … Continue reading
Bedeviled by dust
Many years ago I was hiking in the Sonoran desert in southern Arizona. I love bare rock and the plants and animals that tough it out in arid climates. It was extremely hot that afternoon so I sought shade. A shadow created by … Continue reading
Don’t step on my brown, damp shoes
My shoes are still damp this morning from wandering around the yard last night looking for a good spot to set up my tripod. Early on I wanted to photograph the two Iridium satellite flares. Jupiter beckoned later, and inspired me to … Continue reading
A duck-footed scorpion? How so?
Duck on its feet — Photo by Ian Britton/Freephotos.com "It looks like a duck’s foot," my older daughter remarked after I pointed out the Head of the Scorpion to her the other night. And she was right. I’d never seen … Continue reading
A fabulous disappearing act
Small lumps of ice in the lower left corner of the trench (left image) taken on June 15have disappeared by June 19 (right). There are other more subtle changes in the white material, likely ice, at top. Credit: NASA/JPL-Caltech/University of … Continue reading