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Neil deGrasse Tyson Explains How Gravity Affects Time

Trancecoach jokingly says...

This is why the Delorean needs to reach 88 MPH in order to engage the flux capacitor and send Marty back in time. It is the minimum speed needed to temporarily lift the pressure imposed on the spacetime continuum that keeps us affixed to the surface of the Earth at the bottom of this 4,000-mile-deep gravity well in which we are all living*.


*except for the 3 people currently on the ISS.

Big Nails Bare Hands

Gravity extended agoraphobic trailer

deathcow (Member Profile)

Cdr. Hadfield Last Transmission From The Int'l Space Station

Cdr. Hadfield Last Transmission From The Int'l Space Station

Cdr. Hadfield Last Transmission From The Int'l Space Station

siftbot says...

Tags for this video have been changed from 'Space Oddity, david bowie, sing, hadfield, iss' to 'Space Oddity, david bowie, sing, colonel, chris hadfield, commander, iss' - edited by calvados

dag (Member Profile)

High School Student Goes Off On Teacher About Education!

enoch says...

bravo for this kid stating a very serious issue with teaching and one i agree with but i think his ire may be directed at the wrong person as @Yogi suggested and @JiggaJonson implied.

i substituted for a brief span a few years ago.
the reason my time was brief was not due to the kids,they were fantastic but rather it was the draconian and administrative bullshit i had to put up with.the school system was not looking for a substitute "teacher" but a babysitter.a warm body to sit in class and watch kids become catatonic. reading "packets" and qwell any form of disruption.

i was "officially reprimanded" three times due to actually engaging the classes i was substituting.my crime was not the fact i was covering material the absent teacher had already gone over recently but rather that i was talking and engaging the students.

seriously? it still boggles my mind.the teachers who i covered were appreciative of my efforts but the school only wanted me to keep the seat warm.

interestingly enough,those very same teachers convinced me to volunteer my time to tutor troubled teens who are constantly in ISS (in school suspension).thanks to a new principal who helped push through the massive paperwork and help from these teachers this may become an actual program.we have enlisted two more teachers who have come out of retirement and hope to have more tutors soon who are willing to donate their time.

the irony in all this is that the we (the tutors) have huge latitude in how we teach these troubled teens while vetted teachers have huge restrictions.

so generally speaking:its not the teachers.its the system.

Tears in Space

Hiddekel says...

you can follow the Commander on twitter (@Cmdr_Hadfield) he regularly posts pictures of Earth that he's taken from the ISS. He's my favourite thing about Twitter.

ISS astronauts answer Smarter every day's cat question

Young man shot after GPS error

Stormsinger says...

Nope, I'm not qualified to do real research into the causes and scope of gun of violence, and apparently neither are you, if you think all it takes is looking at FBI numbers. Just looking at FBI numbers wouldn't associate violent crime with leaded gasoline, but there is an extremely strong correlation there, and a path for possible causation as well.

I prefer to let those with the experience to do so meaningfully, adjust for factors like poverty-levels, drug bans, environmental isses and all of the myriad other inter-related factors. I know enough about it to know that to do it right takes years of study. When you have such training, or if you can point to a study by someone who does, then I'll look into credentials to see if it's worth looking at.

Again, -my- point was that we have no such research, because the NRA killed it. Try as you like to derail that point, I consider it pretty telling.

Jerykk said:

Care to provide any specific counter-arguments to any of the points I made or the evidence I cited to support them? Again, do the research yourself because politicians and lobby groups have no interest in anything that undermines their agendas. If you're waiting for them to provide objective and thorough research, you'll be waiting a long time. Of course, if you're only interested in research that supports your own opinion, that will probably be easier to find.

Check out the crime statistics on the FBI website. Compare Florida's violent crime rate to DC's violent crime rate. Compare the percentage of violent crimes committed using assault rifles, handguns and melee weapons. Look at the percentage of crimes committed using legally-obtained guns. Look at the results of the ban on drugs today and the ban on alcohol during the prohibition. If you can look at all that and still believe that banning guns will significantly reduce violent crime, you clearly don't need any amount of research to support your opinions.

UFO's Caught On Camera By International Space Station

PancakeMaster says...

Skipping off the atmosphere or perhaps colliding with the many many tons of garbage spinning around the earth at incredible velocities? Have you seen the high-res radar scans of all the crap up there? I'm amazed the ISS doesn't get pelted more often...

gwiz665 said:

I would however add, that something flying away from Earth's gravity does pique my curiosity.

The new russian 5th generation stealth fighter Sukhoi T-50

jan (Member Profile)



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