This is a photograph showing the first light ever-present in the universe, taken by the European Space Agency’s (ESA) Planck Space Telescope in 2013. It is believed to show light from when the universe was just 370,000 years. In other words, this photograph presents the universe as it looked from the year zero to round 370,000 – 380,000 years old. This is a significant find, as the universe today is thought to be around 13.78 billion years old. This is essentially a photograph of what is called the ‘Cosmic Microwave Background’ (CMB), or to what is more commonly referred to as ‘background radiation’, which can be detected everywhere – including on earth. This is the residue of the ‘Big Bang’ that brought everything into being, the processes of which, eventually led to the formulation of planet earth (around 4.9 billion years ago), and through evolutionary processes, the emergence of all life (humans in their current evolutionary manifestation, are around 200,000 years old). One point that must be remembered is that light is older than matter, and that the dark patches in this photograph demonstrate areas where light is slowing down, and beginning to form matter – the physical stuff of the universe. Light is an electro-magnetic wave that travels through the vacuum of space, and which does not require any other medium to do so (the existence of dark matter and dark energy is known, because such entitles or ‘fields’ exercise an ‘attracting’ or ‘repulsing’ force respectively upon light as it travels through the apparently ’empty’ space). The following documentary conveys the ‘science’ of light, and humanity’s quest to study and understand its nature, covering operations with the naked eye, theoretical assumptions, telescopes, microscopes and mathematical equations, etc. British Professor Al-Khalili explains precisely how the physical universe emerged, and the scientific processes behind this emergence. When the early universe of hot, dense plasma ‘cooled’ and condensed, atoms were formed and trapped light energy released.