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Image of the Sun
Will the Sun Shine Forever?

The Sun is a huge nuclear furnace. It operates by converting hydrogen into helium. In this process, which is called nuclear fusion, it loses mass and produces energy according to Einstein's famous equ ...
Protons and Neutrons are made of Up and Down quarks
Quarks

Quarks are the most fundamental particles that we know of. Both protons and neutrons are made of quarks. We know quarks exist; we have experimental proof. However nobody has been able to isolate them; ...

Ancient Planet in a Globular Cluster Core

Long before our Sun and Earth ever existed, a Jupiter-sized planet formed around a sun-like star. Now, 13 billion years later, NASA's Hubble Space Telescope has precisely measured the mass of this far ...

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