The Sun
How long does it take for light from the Sun to reach Earth?
The answer is either 8 minutes 20 seconds or thousands of years, depending on how you look at it!
Eclipses 2024 | This year's solar and lunar eclipses
Find out when the next solar and lunar eclipses are occurring, and where you can see them.
How to see today's April 8 solar eclipse from the UK and Ireland
Going to miss the April solar eclipse in the US? If you're in western UK and Ireland, you'll get to see a partial.
How to photograph the April 8 total solar eclipse
Our complete guide to the April 8 total solar eclipse, including times, locations and weather predictions
A long totality will be visible in Mexico, USA and Canada on April 8 2024. Find out when it's happening, where to see it and how to view online.
Gallery | Solar eclipses
What is a solar eclipse and how do you view one safely? Find out about the celestial mechanics behind these spectacular astronomical events.
Can't wait for the Great American Eclipse? See one every day, courtesy of NASA's solar spacecraft
Star Diary | 1 to 7 April 2024
How to safely observe the Sun
Have you ever wanted to safely look at the Sun and spot its dynamic features? Read our guide to find out how.
This NASA/ESA Sun-orbiting solar observatory has just discovered its 5,000th comet
Build a solar projector to safely observe the Sun or solar eclipse
Project an image of the Sun for safe observing with this step-by-step DIY astronomy build.
8 solar telescopes perfect for observing an eclipse of the Sun
Our pick of the best telescopes for safely observing the Sun.
An astronaut on Mars would be able to see Earth pass in front of the Sun. This is what it would look like
It's possible to see transits of Venus and Mercury from our planet, but could a Martian astronomer see a transit of Earth?
This is how many Earths could fit in the Sun
How big is Earth compared to the Sun, and how many times would our planet squish into the space occupied by our host star?
What colour is the Sun? Depends on how you observe it, and from where
Our Sun is often depicted as being yellow, but is this technically correct?
Scientists may have solved the Sun's biggest mystery: why its outside is hotter than its inside
Has one of the biggest mysteries about the Sun finally been solved?
What Sun dogs are and how to see one
Find out what causes this optical phenomena and what conditions are needed to see one for yourself.
Gallery | Planes in front of the Sun and Moon
A gallery of images of planes passing in front of the solar or lunar disc.
How old is the Sun?
How old is the Sun, and why is the Sun nearly the same age as planet Earth?
How hot is the Sun?
Find out about the internal structures of our host star and their different temperatures.
What causes an annular solar eclipse
An annular solar eclipse is also known as a 'ring of fire'. But what is it, and how does it differ from a total eclipse?
How to improve your hydrogen alpha images of the Sun
Follow our image processing guide and capture better Ha images of the Sun.
How far is Mars from the Sun?
A guide to Mars's orbit around the Sun, and how its distance from its host star changes.
Eye On The Sky | NASA captures a Halloween Sun
A scorching, fiery Halloween pumpkin is revealed in an image highlighting the active regions of our Sun.