- 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: September 2010
Space travel on the cheap
With moonrise after 10 o’clock, I drove out to the country last night to take in some dark sky and silence as well as to check out how Comet Hartley 2 was doing. In a previous blog, I wrote that … Continue reading
Tagged Astro Bob, comet, Comet Hartley 2, Jupiter, moon, Venus
Leave a comment
Goldilocks might find new planet ‘just right’
Better watch out for the three bears, Goldilocks. A team of exoplanet hunters from University of California-Santa Cruz, and the Carnegie Institution of Washington announced their exciting discovery today of a potentially habitable planet around the star Gliese (GLEE-zeh) 581 … Continue reading
Tagged Astro Bob, exoplanet, Gliese 581, planet
Leave a comment
Space out with the ISS
The International Space Station (ISS) is again buzzing the sky at dawn, and sunrise is late enough for many of us to see it. Some passes happen around 6:30 a.m., when commuters stuck in traffic on their way to work … Continue reading
Tagged Astro Bob, ISS, Soyuz, space station
2 Comments
Date with a dolphin
Dolphins are beloved by humans for their intelligence and sense of play. Thanks to the ancient Greek seafarers, who were also well acquainted with dolphins, one splashes across the night sky throughout the summer and fall months. Delphinus (del-PHY-nis) was … Continue reading
Tagged Astro Bob, Delphinus, dolpin, Summer Triangle
Leave a comment
Moon and Pleiades a sweet sight in binoculars tonight
Tonight’s moon comes up in the northeastern sky in Taurus the Bull. Since it’s five days past full phase, its light has diminished enough so that sky watchers in rural areas can again see the Milky Way slicing across the … Continue reading
Tagged Astro Bob, moon, phases, Pleiades, Seven Sisters, terminator
1 Comment
In darkness you may find light
I had a craving for General Tso’s chicken last night and stopped at the Beijing Restaurant to pick up an order. As I was writing the check, the fellow behind the counter remarked about the early darkness. “It’s only 8, … Continue reading
Tagged Astro Bob, aurora, magnetic field, night, Saturn
2 Comments
Planets line up, world doesn’t end
We’ve talked over the past week about Jupiter and Uranus being near one another in the sky, and how that makes this a good time to find the more remote and fainter planet with binoculars. As it turns out, those … Continue reading
Tagged Astro Bob, gravity, planets, solar system
5 Comments
Curious dark rock on Mars may be visitor from the asteroid belt
Last Thursday, the Opportunity Rover on Mars took a photo of the landscape on its way to Endeavor Crater and turned up something interesting. Mission controllers spotted a curious rock about 18 inches across some 102 feet in the distance … Continue reading
Tagged Astro Bob, Mars, meteorite, Oileán Ruaidh, Opportunity, Red Island, rover
4 Comments
Don’t miss Jupiter and the Harvest Moon tonight
Have you been watching the moon’s nightly progress toward Jupiter this week? Well, tonight’s the big night. We’ll have a full Harvest Moon and it will sit right atop Jupiter. The night’s two brightest characters join together for a wonderful … Continue reading
Tagged Astro Bob, equinox, full moon, Harvest Moon, Jupiter
15 Comments
Frosty and blazing, fall steps forward
Yikes, fall begins tomorrow night (Sept. 22). Is the autumnal equinox already upon us? Must be the lulling effect a long summer has on the mind, because I didn’t pay attention to the calendar until this morning, the last full … Continue reading
Tagged Astro Bob, autumn, axis, coronal hole, Earth, equinox, fall, sun
Leave a comment