Watching a solar eclipse is always fascinating. During the phase when the moon completely obstructs the sun, daylight gives way to a deep twilight sky.
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Some parts of North America will witness a total solar eclipse in April 2024. This may seem far away, but you should think about preparing for this rare and fascinating phenomenon.
Where do the hydrogen and oxygen that make up the earth’s water come from?
NASA Goddard/Flickr
A recent study shows that the Earth’s water could come directly from the oxygen and hydrogen present in the rocks that formed it, and not from a late supply by asteroids.
The view of our planet from aboard the International Space Station.
Expedition 43/NASA
Of all the planets in the solar system, there’s a reason we call Earth home. It’s made of just the right stuff. It’s not too small, or too big, or too hot or too cold. It’s just right.
The air up high is just really bad at ‘holding’ onto the radiation coming from the Sun, and the warmth passes straight through it on its journey toward the ground.
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