A 12.9-gram specimen of NWA 2710, an H5 stony chondrite, sparkles in the light. The shiny flecks are iron-nickel metal set in a stony matrix. Credit: Bob King

Meteorites From The “Wild West” Of The Asteroid Belt

H-chondrites are some of the most common meteorites. They account for 33% of the all space rocks seen to fall to Earth and about 40% of all those cataloged. If you go shopping for meteorites on eBay and dealer websites, the H-chondrites generally fall (excuse the pun) within most people’s budgets. “H” stands for “high metal”…
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A single frame from DSCOVR shows the striking contrast between the bright blue and white Earth and dark moon. Credits: NASA/NOAA

Cosmic Stunner — NASA Camera Shows Moon Crossing Face Of Earth

I could look at this a long, long time. What an epic view! This stunning animation was made using photos taken by the EPIC camera aboard NASA’s Deep Space Climate Observatory (DSCOVR) as the moon moved in front of the sunlit side of Earth last month. DSCOVR, parked in a stable zone called the L1 Lagrange point,…
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The waning gibbous moon way up high in a deep blue sky around 7 this morning. Credit: Bob King

Good Day, Moon

When my kids were little we often read the bedtime story Goodnight Moon about a child saying goodnight to everything in the room. It usually helped to settle and ready them for a night’s sleep. The moon is usually a creature of the night, but at certain times of year, it also stalks the day. When stepping…
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This artist's concept shows an auroral display on a brown dwarf. If you could see an aurora on a brown dwarf, it would be a million times brighter than an aurora on Earth. Credit: Chuck Carter and Gregg Hallinan/Caltech

Brown Dwarf Pulses With Auroras A Million Times Brighter Than Earth’s

It’s been pretty quiet around here for auroras lately but not so at the brown dwarf LSRJ1835+3259. Located about 20 light-years from Earth in the direction of the constellation Lyra the Harp, it crackles with auroras a million times brighter than those seen on Earth. Brown dwarfs are too large to be considered planets and too…
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Astronaut Terry Virts inserted an effervescent antacid tablet into a ball of water while crewmates filmed the reaction with the Red Epic Dragon camera.
Credit: NASA

Space Station Adds Human Touch To August Evening Skies

Six astronauts — a mix of Russians, Americans and Japanese — are currently orbiting the Earth 15-16 times a day at an altitude around 250 miles in the International Space Station (ISS). Every time I see its bright light travel complete its west to east arc across the sky I think of all the people…
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