Why Does The Moon Go Red During An Eclipse?

I know why the moon goes red during a total eclipse. But why does it not go red until near totality? Phil, London This is actually a very interesting question, with an (unfortunately) unsatisfying answer. But...

What Would Happen If The Sun Disappeared ? – AGAIN!

In a previous post, I discussed how long the Earth would be able to survive without the Sun. We had to assume that our star would magically disappear into nothingness. My friend Gavin asked online: “Can...

What Would Happen To The Earth If The Sun Would Disappear?

The Sun is responsible for all life on Earth and most of our planet's means of energy production depends on the Sun. We are told that without it we cannot survive, or at least...

“The Stars Were Aligned”

Sometimes inspiration strikes in unusual ways at unusual times. I was tagged in a quote tweet where Prof Peter Coles states that as an astrophysicist he must contest Prince Harry's statement that "the stars...

Why Do I Still Rant About Astrology?

A few years ago I filmed a vlog ranting about Astrology being nonsense and I'm now revisiting the subject, not because something has changed (it's still bullshit), but because I think I understand my...

The Ethics of Timetravel

I recently talked about how time travel to the past is unlikely to be possible. That came with the label that we haven't found a law that tells us that it's impossible just yet....

Back to the Past

Time is a curious dimension. Although we might be still in space, there's no way for us to be still in time. And while we can explore every direction in space, time has a...

Has anyone got a recipe for artificial gravity?

One of the underlying ideas in Einstein's general relativity is that for an observer, the acceleration due to gravity, or the acceleration due to thrust, are identical. This is a consequence of the equivalence...

Travelling through the cosmos

Space is big. The Voyager probe, launched in 1977 to explore Jupiter and Saturn, took 36 years to leave the Solar System. It is the furthest human object from us, and it is still...

One Planet, One Climate, One culture.

One of my biggest pet peeves about sci-fi universe building is the lazy approach in building alien civilisations. We often see the trope showing one world, one climate, and one language. Given the variety...

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