When we let go of time, reality soon comes crashing down.

Véronique Le Guen with Michel Siffre in 1990. Like Siffre, Le Guen spent months underground exploring the effects of darkness and isolation on time. Months after returning from the caves, Le Guen committed suicide, aged just 33. Shared under CC BY-SA 4.0.

A pair of mysterious signals tell astronomers a dark story

The death of sunlike stars is often beautiful, as this photo of a distant dying star shows. Credit: X-ray: NASA/CXC; Ultraviolet: NASA/JPL-Caltech/SSC; Optical: NASA/STScI(M. Meixner)/ESA/NRAO(T.A. Rector); Infrared: NASA/JPL-Caltech/K. Su. Shared under CC BY-NC 2.0.

Scientists speculate about the possibility of life on truly alien planets

Credit: ESO/N. Bartmann/spaceengine.org

Scientists finally came to close to achieving a real breakthrough in nuclear technology.

A color-enhanced image of the inside of a NIF preamplifier support structure. Credit: Damien Jemison, Lawrence Livermore National Laboratory

Despite floods and fires, 2021 will look like a good year compared to what comes next.

Photo by Joanne Francis on Unsplash

Gravitational waves, Lucy hunts for asteroids, the origins of Oumuamua, and Boeing’s problems on the launchpad

Oumuamua, an artists impression. Credit: European Southern Observatory/M. Kornmesser

A rogue Russian module sends the space station spinning out of control and astronauts fleeing to safety

The old Pirs module leaves the space station to make way for Nauka. Credit: ESA/NASA–T. Pesquet. Shared under CC BY-SA 3.0 IGO.

A century ago we almost lost a major city. Why don’t we act to stop it happening again?

Credit: NASA’s Goddard Space Flight Center Conceptual Image Lab shared under CC BY 2.0.

Astronomers are finally getting a glimpse of the most extreme and mysterious objects in creation

Centaurus A: ESO/WFI (Optical); MPIfR/ESO/APEX/A.Weiss et al. (Submillimetre); NASA/CXC/CfA/R.Kraft et al. (X-ray) — shared under CC BY 4.0.

Alastair Williams

Once I studied physics and distant galaxies. Now I fly satellites instead, and spend my time thinking and writing about trends in space and technology.

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store