That part of the wider Universe that has been able to send us light signals since the beginning of the Universe. The Universe as a whole is larger, perhaps infinitely larger, than the observable part of it.
Making the decision to study can be a big step, which is why you'll want a trusted University.
The Open University has 50 years’ experience delivering flexible learning and 170,000 students are studying with us right now.
Take a look at all Open University courses.
If you are new to University-level study,
we offer two introductory routes to our qualifications. You could either choose to start with an
Access module, or a module which allows you to count your previous learning towards an Open University qualification. Read our guide on
Where to take your learning next for more information.