Will we ever know where we came from? Nasa have released a stunning image of a cloud complex 390 million light years away. But some look to the picture as proof that there are things that we will never fully understand.
‘Unprecedented’ images show secrets of space

Glossary
Nasa - The National Aeronautics and Space Administration, responsible for the US space programme.
Ultramassive black holes - The most massive objects in the universe.
Neutron - A part of an atom with no electrical charge.
Exoplanets - The name given to any planets that exist outside the solar system.
Big Bang - The moment the universe came into being. It is thought that this took place in a kind of explosion from a dimensionless singularity.
Gravity - An invisible force that pulls objects towards each other. Earth's gravity keeps us on the ground and makes things fall. It is less strong on Mars.
Astrophysics - The study of the physical laws and ideas that explain how the stars and planets work.