The Minor Planets
Asteroids are rocky fragments left over from the formation of the solar system about 4.6 billion years ago. Most of these fragments of ancient space rubble - sometimes referred to by scientists as minor planets - can be found orbiting the Sun in a belt between…
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Biology
How Does Salmonella Get Inside Chicken Eggs?
Salmonella enteritidis is a bacterium that causes flu-like symptoms in humans. It usually enters the human…
Geology
Crater Lake
Crater Lake: overwhelmingly yet sublimely beautiful. Moody. At times brilliantly blue, ominously somber; at…
Astronomy
The First Starlight
Imagine being able to see our Universe 14 billion years ago when it was just a baby. If we had a time machine,…
Astronomy
The Brave and Cold Ulysses
Deep space is cold. Very cold. That's a problem--especially if you're flying in an old spaceship. And your…