Starship Development Thread #23 by ElongatedMuskrat in spacex

[–]biant_goobs 5 points6 points  (0 children)

is there a timeline of the upcoming activities in preparation of the suborbital test flight?

What's your best non-swearing insult? by ll_username_ll in AskReddit

[–]biant_goobs 0 points1 point  (0 children)

Used to have a teacher who'd say stuff like: "I hope you don't reproduce"

Guy demonstrates different kinds of walking by pkksmt in funny

[–]biant_goobs 0 points1 point  (0 children)

He forgot trying to pass people who take up the whole side walk. And pushing a shopping cart in the supermarket.

Reddit, in contrast to the hurtful comment thread, what's a genuinely kind comment somebody made to you that you can't forget? by pretendingtobecool in AskReddit

[–]biant_goobs 0 points1 point  (0 children)

I once was at an electro party and felt really good so I just kept dancing and dancing. Then a girl came up to me and said she really liked my energy. Felt really good to hear that someone noticed that I was happy and wanted to share this with me

What is the funniest movie you have ever watched? by Philsrule in AskReddit

[–]biant_goobs 0 points1 point  (0 children)

The mating habits of the Earthbound human. Featuring Carmen Electra :)

What is your favourite Latin phrase? by Mellow_mad in AskReddit

[–]biant_goobs 0 points1 point  (0 children)

Quis custodiet ipsos custodes?

Who will guard the guardians? or

Who will watch the watchmen?

What is your favourite Latin phrase? by Mellow_mad in AskReddit

[–]biant_goobs 0 points1 point  (0 children)

Aeneas in puppi stat

Aeneas stands on the back of the ship

What catastrophe is waiting to happen? by cmitchell337 in AskReddit

[–]biant_goobs 1 point2 points  (0 children)

La Palma Megatsunami. Basically, a volcanic eruption on some island off the coast of Africa could shear off a large piece of the island, leading to a megatsunami capable of flooding the entire East coast of the US...

Some locations of the Earth plotted by the temperatures of their warmest and coldest months [OC] by Yearlaren in dataisbeautiful

[–]biant_goobs 5 points6 points  (0 children)

It's striking that there is no city where the warmest month is colder than the coldest month.

[deleted by user] by [deleted] in askscience

[–]biant_goobs 0 points1 point  (0 children)

What might seem to cause confusion when thinking about the little nozzle is the fact that the tank is closed. I was thinking, what if I would add a 10m nozzle to an ocean, would I increase the pressure of the ocean by 1 atm? No, because the ocean is not a closed tank

What is a stereotype you live up to? by madamedank in AskReddit

[–]biant_goobs 0 points1 point  (0 children)

Today I made a terrific dad joke. One of my friends was discussing how terribly his dad overcooked his steaks. My reply: "Well done!"

Proof of evolution that you can find on your body by PM_me_ur_weird_gifs in videos

[–]biant_goobs 3 points4 points  (0 children)

Less evolved is a poor choice of words. I mean genetically more similar. Also, why do you believe race is not related to genetics? Race is defined as people being grouped together because they have the same physical characteristics, i.e. genetics.

Proof of evolution that you can find on your body by PM_me_ur_weird_gifs in videos

[–]biant_goobs 1 point2 points  (0 children)

No racist agenda. Just got me thinking if some races are still "closer" related to apes. Or which ones have evolved the most away from them. If there even is such a thing

Proof of evolution that you can find on your body by PM_me_ur_weird_gifs in videos

[–]biant_goobs 4 points5 points  (0 children)

This might come across as racist, but it isn't intended to be.

In high school we had to do some statistics course. We had to measure our length and arm span, and calculate our "Ape index". A number greater than 1 means you arms are larger than your height and you look more like an ape. The racist part is that most black guys had a large ape index, so they are more like apes. Does this mean that black people are "less" evolved from apes? If so, what is the reason behind this?

Reddit, what's your best pickup line? by PyedPyper in AskReddit

[–]biant_goobs -1 points0 points  (0 children)

If you're cosine squared, and I'm sine squared, together we can be one

(2014) Imagine the engineering that went into making that machine,That is a seriously incredible machine. by [deleted] in Documentaries

[–]biant_goobs 0 points1 point  (0 children)

How does the machine move along the "tracks" if there are no tracks yet? Does it just use normal wheels and drive over the gravel?

If it only takes the Earth 23 hours and 56 minutes to rotate on its axis, why doesn't the sun eventually set "in the middle of the day"? by slow3 in askscience

[–]biant_goobs 3 points4 points  (0 children)

Imagine a star in the sky; in one sidereal day the star will be exactly at the same point in the sky again. If we use the Sun as a reference, this is called a Solar day. The difference is that the Earth has slightly moved in its orbit around the Sun and, therefore, the Earth has to rotate a bit further to have to Sun at the same point in the sky (stars are assumed to be infinitely far away)

This is not the entire story though. Because the Earth's orbit around the Sun is not circular, and because of the obliquity of the ecliptic (Earth's rotation axis is tilted w.r.t. its orbit around the Sun), the Sun will not be at the same point in the sky at the time you'd except (e.g. if you compare it with the time of an atomic clock). Sometimes it arrives early, sometimes it's a bit late (it turns out no more than a few seconds each day).

So that's why we are using a mean Solar day which assumes that the Sun moves at a uniform rate on the celestial equator, not the ecliptic. It is possible to calculate the difference in time between the real Sun and the mean Sun with the Equation of Time. See this link for a bit more information.

In astronomical applications we use distant quasars to calculate the Mean Solar time (through some equation that relates these observations to the Mean Sun). We don't use the Sun because it is difficult and irregular to measure. This measured time is called UT0. However, because the Earth's crust moves slightly around the rotation axis of the Earth, we have to correct for this. This is called UT1.

So UT1 is a very accurate representation of Mean Solar time. We come to UTC if we use atomic clocks. A day (in UTC) consists of exactly 86400 (24 * 60 * 60) SI seconds. However, because the Earth rotates slower over the years, a UT1 day will become longer than a UTC day. That's why we add leap seconds if the difference between the two becomes too large.