Space & Astronomy
Exploring "Why" questions about Space & Astronomy
480 articles
Why do Americas call “Back Bacon”, “Canadian Bacon” and when did that start?
It is called both Canadian Bacon and to a far lesser degree Irish Bacon or Back Bacon in the US. This is because they are the cuts that the Canadians and Irish (as well as the UK) call bacon. They are
Why are spaceships ring-shaped in some sci-fi movies/shows?
spinning a ring and sticking people to the inside is a very cheap way to make artificial gravity. We actually don't know how to make artificial gravity any other way right now. So they are being a lit
why don’t we build the aquatic equivalent of spaceships and explore the deepest parts of the ocean that way?
because a perfect vacuum in space is only -14.5 PSI; the pressure at Challenger Deep, the deepest part of the ocean is [16,000 PSI](_URL_0_)
Why are BBC produced nature documentaries like Planet Earth and Frozen Planet given a new narator for US audiences? Why not keep David Attenborough in the US version?
Like every TV network decision, it's based on what they think will appeal to the widest audience and thus make them the most money. Maybe they think that having a British narrator will make the show b
Why do older men start sprouting hairs from random places?
46 yo. You will go through several puberties. Nose puberty, ear puberty, etc.
Why is it that hard for mobile apps to remember their exact state before re-start?
Many apps may not want to retain their state through a restart process because if something goes wrong with them it would then be impossible to return them to a known good state. It is a feature for t
Why do computers need to restart after updating?
Some times updates need to modify system files that are currently in use by the OS. In those cases, the system will reboot, thus "unlocking" those files, and apply the changes during the boot sequence
Why do you get startled/feel a rush of a adrenaline if you catch yourself falling asleep?
Are you talking about hypnic jerk (sometimes called hypnagogic jerk)? That feeling where you jerk suddenly back awake sometimes when you're falling asleep? The prevailing theory is this is an evolutio
Why cant you see stars in pictures taken from the moon, but you can see stars in pictures taken from earth.
Because the Moon is too bright. If you just try to take a normal picture of the sky from Earth, you probably wouldn't see any stars either. The picture from Earth where you see stars are usually long
Why do we lose saturation in our colors for several minutes when we are in the sun for a couple hours?
It's been about 2 years since I studied this, but I think I can take a crack at it. Your cones have the ability to adjust to a wide range of photons/second hitting your eye. For example, a tv screen m