At that time the planet in question is as close as it gets just 0 4 au so bigger and because it s 100 illuminated from our point of view it s as bright as it can be in our night sky.
Bright blue light in the sky.
Naturally there was some speculation that perhaps the light was a ufo or even a meteor but in reality it was the launch of a trident ii d5 missile by.
That s why the sky appears blue.
Normally this effect is very slight.
At that time the blue tinted planet will be 4 light hours or 28 9 astronomical units from earth it will shine at a slightly brighter magnitude 7 8 and will be visible all night long in good.
If you ve looked up at the night sky recently you might have been surprised to see a train of bright lights moving.
What was that weird blue glow in the sky.
But as a result the last coloured light that can be seen as the sun falls below the horizon is green.