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April 16, 2017
This artist’s concept depicts the early Martian environment (right) — believed to contain liquid water and a thicker atmosphere — versus the cold, dry environment seen at Mars today (left). NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) has been orbiting the Red Planet for more than two years, studying its upper atmosphere, ionosphere and interactions with the sun and solar wind. NASA’s Goddard Space Flight Center
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Astro Bob: How Mars turned nasty cold
April 16, 2017 - 9:21am
April 9, 2017
Astro Bob: Spring nights sweeter with the space station
April 9, 2017 - 10:18am
April 6, 2017
Jupiter. Contributed photo.
Planet Jupiter comes in for a close-up, will be bright Friday night
April 6, 2017 - 6:58pm
April 2, 2017
A future lunar base, perhaps constructed using 3-D printing devices, will have to be heated during the long lunar night. Covering it with lunar soil, called regolith, would help to insulate the structure against extremes of heat and cold. Credit: ESA/Foster and Partners
Astro Bob: How moon colonists might survived the frigid lunar night
April 2, 2017 - 10:22am
March 26, 2017
The slow cyclic wobble of Earth’s axis called precession resembles the motion of a top slowing down only the Earth’s not slowing down – it repeats the circle every 25,800 years. The wobble causes the pole star to change and the Sun to moves westward along the zodiac. Earth and Planetary Magnetism Group ETH-Zurich
AstroBob: Salvador Dali would love these constellations
March 26, 2017 - 7:00am
March 12, 2017
Earth’s counterclockwise motion around the sun (to the left or east) causes the constellations to drift to the right (west) during the year. The effect is subtle — stars rise in the east four minutes earlier each night because of our planet’s travels — but the minutes add up, creating a complete turnover in the constellations every year. Bob King / rking@duluthnews.com
AstroBob: Welcome Arcturus!
March 12, 2017 - 6:12pm
March 5, 2017
A brilliant fireball breaks up in the atmosphere. Visible light and radio waves given off by a bright meteor may be translated by common materials into hissing sounds some hear at the sight of the event. John Chumack
AstroBob: A new take on why we hear meteors
March 5, 2017 - 3:07pm
February 26, 2017
Luna 17, the spacecraft that carried the Lunokhod 1 rover to the surface, is the shiny platform seen above center in this photo taken by NASA’s Lunar Reconnaissance Orbiter. You can make out the rover tracks around the lander including the “doughnuts” the rover made to test its turning abilities. NASA / GSFC / Arizona State University
AstroBob: Can you see the Russian landers, rovers on the moon? Yes!
February 26, 2017 - 1:08pm
February 12, 2017
Use this photo of Saturn taken by the Hubble Space Telescope to get oriented on which ring is which. Credit: NASA/ESA
AstroBob: Saturn's got a whole new groove
February 12, 2017 - 1:14pm
September 17, 2016
Woman looking through a telescope watching the stars. Night sky, constellations, Draco, Ursa Major, Big Dipper, Botes. Woman under night sky. (iStock Photo)
Theodore Roosevelt National Park hosts Dakota Nights Astronomy Festival
September 17, 2016 - 9:05pm
June 20, 2016
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Rare pair of full moon, solstice a ‘celebration of life’
June 20, 2016 - 10:25pm
September 18, 2014
Reuters Photo 
In this 2012 NASA handout image, Swirls of green and red appear in an aurora on Sept. 3 over Whitehorse, Yukon. Stargazers across a wide swath of the United States got a rare view of the northern lights on Friday, a colorful cosmic display normally only visible in far northern latitudes.
Learning about the night sky: Astronomy festival Dakota Nights begins Friday at Theodore Roosevelt National Park, Medora
September 18, 2014 - 12:56am
May 8, 2014
FNS Photo by Bob King 
With temperatures rising and clouds clearing, the stargazing season is nearly set in the night sky. Experts provide tips for beginning stargazers.
Look to the skies: With calm nights on horizon, experts provide tips for beginner stargazers
May 8, 2014 - 12:34am
April 12, 2014
Total eclipse of the moon arrives late Monday night
April 12, 2014 - 11:22pm
September 28, 2013
Press Photo by Katherine Grandstrand
Former astronaut Rick Hieb, a Jamestown native, addresses a crowd at the Cottonwood Campground Amphitheater at Theodore Roosevelt National Park on Saturday evening.
Astronaut: Keep reaching for the stars
September 28, 2013 - 11:07pm