What Is the Sun Made Of and When Will It Die?
Like any star in its prime, the sun consists mainly of hydrogen atoms fusing two by two into helium, unleashing immense energy in the process.
Article Type: Astronomy
How to Photograph a Meteor Shower?
Taking photographs of a meteor shower can be an exercise in patience as meteors streak across the sky quickly and unannounced, but with these tips – and some good fortune…
Cosmologists Debate How Fast the Universe Is Expanding
In 1998, cosmologists observed dozens of distant supernovas and inferred that they’re racing away from Earth faster and faster all the time.
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