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June 25, 2017
The most common firefly of eastern North America is Photinus pyralis, or the common eastern firefly. This is most of us see in own backyards at night. Bob King / rking@duluthnews.com
AstroBob: Fireflies - green sparks in the dark
June 25, 2017 - 11:48am
May 28, 2017
Astronaut Jack Fischer waves while attached to the Destiny laboratory during a spacewalk to replace a failed computer relay box and install a pair of wireless antennas last week. Credit: NASA
AstroBob: Observing alert -- space station marathon is underway
May 28, 2017 - 6:06pm
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 19, 2017
The sun’s fiery conveyor belts skim the surface of the sun, sweeping up the magnetic fields of old, dead sunspots. The "corpses" are dragged down at the poles to a depth into the solar depths, where they’re recharged by the sun’s rotation. Reincarnated, they become buoyant and float back to the surface to make new sunspots! NASA
AstroBob: Ride the roller coaster to solar minimum
February 19, 2017 - 2:04pm
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
December 15, 2016
The sun sets so early and rises late so even though it’s cold out, you can get out early in the evening with your family and stargaze, King says. Special to The Forum
Merry and bright: Mark the calendar for winter solstice and starry nights
December 15, 2016 - 5:51am
September 2, 2016
Curious radio signal stirs talk of extraterrestrials
September 2, 2016 - 9:06am
January 6, 2016
Teacher, students present research findings at convention
January 6, 2016 - 10:47pm