Sun

Will the Sun make a planetary nebula when it dies?

In around 7 billion years, we expect the Sun to run…

100 years ago, Cecilia Payne discovered what the stars are made of

For centuries, even after we knew…

The quantum reason that explains why the Sun shines

Despite the Sun’s high core temperatures, atomic…

Fastest spacecraft ever built to break its own speed record

The Parker Solar Probe is about to undergo…

Ask Ethan: Is Earth’s climate changing as the Sun loses mass?

As the Sun ages, it loses mass, causing…

The gruesome fate of every planet when the Sun dies

What was it like when the Sun was born?

It took 9.2 billion years of cosmic evolution before our Sun…

Ask Ethan: What if the Sun were a grain of sand?

The cosmic scales governing the Universe are almost…

How much energy does the Sun produce?

Figuring out the answer involved a prism, a pail of water, and a 50 year effort by the most…

Surprise: the Moon outshines the Sun at the highest energies

Across all wavelengths of light, the Sun…