Take a 10 billion-year journey with a photon, from a distant supernova to Earth

Aeon·Jan 5

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A photon's journey from a distant supernova to earth is being explored, with the photon having traveled for 10 billion years. The journey of light through space is also being considered in a broader cosmological context, with the universe's age and expansion being discussed. The specifics of the photon's origin and the universe's evolution are being examined through various scientific perspectives and visualizations.

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The 13 billion years that led to us – a cosmological timelapse

Aeon·Jun 29

Every second, the Sun converts about 600 million tonnes of hydrogen into helium and loses roughly 4 million tonnes of that mass outright as energy, and the light warming your face today left the core as gamma rays that took somewhere between 10,000 and 1

ScienceBlog.com·1d ago

The observable universe is roughly 93 billion light-years across despite being only 13.8 billion years old, because space kept expanding while the oldest light was travelling toward us

Space Daily·6d ago

The plodding photon, or how the speed of light looks sluggish on a galactic scale

Aeon·Feb 13

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Take a 10 billion-year journey with a photon, from a distant supernova to Earth

Full coverage

The 13 billion years that led to us – a cosmological timelapse

Every second, the Sun converts about 600 million tonnes of hydrogen into helium and loses roughly 4 million tonnes of that mass outright as energy, and the light warming your face today left the core as gamma rays that took somewhere between 10,000 and 1

The observable universe is roughly 93 billion light-years across despite being only 13.8 billion years old, because space kept expanding while the oldest light was travelling toward us

Our Universe has light not by chance but by necessity

Illuminating the Journey of a 4-Billion-Year-Old Asteroid

Visualisations explore what the deep future holds for our night sky

The abyss at the edge of human understanding – a voyage into a black hole

The plodding photon, or how the speed of light looks sluggish on a galactic scale