Science
Black holes, dark matter, gravitational waves and exoplanets: find out how astronomy is unlocking the secrets of the Universe.
How long it takes 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!
How Earth's orbit affects our view of the night sky
The stars and constellations appear to move throughout the year. But it's not the stars that are moving - it's us.
How exoplanets changed the prospect of finding life beyond Earth
Patrick Moore discusses the allure of exoplanets, and how their discovery shifted the goalposts in the search for life beyond Earth.
From Galileo to Hubble, these are six of the greatest, most famous telescopes in history
Patrick Moore's pick of the telescopes that, in their time, reigned supreme and led to ‘quantum leaps’ in science.
Why Venus is called the morning star or the evening star
Why is Venus either visible at sunset or sunrise? It has to do with the planet's orbit, relative to both the Sun and Earth.
Why Earth has seasons, and what causes them
How does Earth's orbit around the Sun cause the changes from spring to summer to autumn to winter?
The autumn equinox is approaching. Here's when it is, and what it means
When is the equinox in 2025, and what does September equinox mean for stargazers?
Five beautiful galaxies to see in the night sky this autumn. How many can you tick off the list?
In one of Patrick Moore's columns for BBC Sky at Night Magazine, the late astronomer and broadcaster reveals his favourite galaxies to spot in autumn's night skies.
This star's jet is 8 lightyears long, perched on the edge of our Galaxy, and could help settle a big scientific debate
NASA rover finds evidence of ancient life on Mars. Here's what it means
Where are all the black holes? There may be 100 million lone black holes in our Galaxy. Scientists have a plan to find them
Saturn's rings have rainbows, and astronomers may finally have worked out what's causing them
Water-ice spouting from moon Enceladus is creating peculiar striped bands of light in Saturn’s E ring
Is teleportation possible? This is what the science says
Could human teleportation, as seen in Star Trek, ever be achieved?
Why does it take light from galaxies so long to reach us if they used to be much closer?
Could the Universe have expanded at a speed faster than light?
Images of the black hole at the centre of our Galaxy
Think black holes are black? They can be some of the brightest objects in the Universe. Here's why
If black holes are black, how can they give off light?
If life did ever exist on Mars, these five regions are our best bet of finding proof
Little red men? A history of our obsession with life on Mars, from canals to Curiosity
Mars has long ignited our imagination. Ben Evans traces the history of our quest for life on the fourth rock from the Sun
