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level 3: advanced icon
Science, Maths & Technology
White dwarfs and neutron stars
Stars live their lives for millions or billions of years but will eventually die. Low mass stars (like the Sun) will end their lives producing so-called planetary nebulae, and leave behind a collapsed core known as a white dwarf. More massive stars will end their lives by exploding and producing a so-called supernova remnant, and leave a neutron...
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level 3: advanced icon
Science, Maths & Technology
The formation of exoplanets
Over the last few decades astronomers have discovered thousands of planets orbiting stars other than the Sun – known as exoplanets. Many of these exoplanets are quite unlike anything we see in our Solar System. These include ‘hot Jupiters’ orbiting very close to their parent star and rocky ‘super Earths’ many times larger than our home planet. ...
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level 2: intermediate icon
Science, Maths & Technology
Unsolved problems in cosmology
The science of cosmology has been very successful in explaining a wide range of observational evidence about the Universe, from the detailed properties of the cosmic microwave background radiation to the distributions of galaxies, and the elemental abundances in astrophysical environments. However, there are several major unknowns in ...
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level 2: intermediate icon
Science, Maths & Technology
Astronomy: images of the Universe
Modern astronomy utilises a range of techniques across the electromagnetic spectrum that allow astronomers to measure the brightness, size and shape of astronomical objects, as well as their structure in many cases. This free course enables you to explore multiwavelength images of the Universe and make your own measurements of stars, nebulae and...
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level 1: introductory icon
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Science, Maths & Technology
Moons of our Solar System
In this free course, Moons of our Solar System, explore the many moons of our Solar System. Find out what makes them special. Should we send humans to our Moon again?
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Science, Maths & Technology
Microgravity: living on the International Space Station
This free badged open course, Microgravity: living on the International Space Station, will help you to consider microgravity environments in more detail than before! You will make direct comparisons of some important physical values between the International Space Station (ISS), the Earth and the Moon.
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level 1: introductory icon
Science, Maths & Technology
Introducing vectors for engineering applications
Applied mathematics is a key skill for practicing engineers and mathematical modelling is an ever-increasing field within engineering. This free course, Introducing vectors for engineering applications, covers one aspect of a Level 1 engineering module, the application of vectors and vector algebra, using examples inspired by engineering ...
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level 1: introductory icon
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Science, Maths & Technology
Astronomy with an online telescope
This free course shows you how to navigate the night sky, and introduces the wide variety of objects it contains. You will develop a hands-on understanding of telescopic observations using the Open University’s own robotic telescope facility COAST sited on the island of Tenerife. Supported by your own measurements we illustrate how stars...
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Science, Maths & Technology
Could we control our climate?
Climate crisis is one of the grand challenges we face as a society, but it can be hard to approach as a subject. Not only can the science at times seem dauntingly complex, but the solutions are also far from clear. This leaves many people feeling confused, guilty, anxious, angry, or else completely switched off from the subject. This course ...
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level 2: intermediate icon
Science, Maths & Technology
Electronic applications
Electronics is fundamental to modern life. Take for example this free course, Electronic applications. An interactive website with videos and interactive software will show how electronic systems pervade everything we do; review some basic ideas of signal processing, control and communications; and allow you to use a digital filter to remove ...
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level 1: introductory icon
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Science, Maths & Technology
Can renewable energy sources power the world?
We ask the question ‘Can renewable energy sources power the world?’ as a response to the growing awareness that increased use of renewable energy technologies is making a major contribution to global efforts to limit anthropogenic climate change. The course begins by examining the environmental concerns that have caused a rise in interest in ...
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level 1: introductory icon
Science, Maths & Technology
In the night sky: Orion
In this free course, In the night sky: Orion, you will explore the night sky, discover how stars formed and find out about exoplanets, all through the constellation of Orion.