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#46 | |
Veteran
Join Date: Apr 2004
Location: Kansas City, MO
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Quote:
But that all assumes that there is a rigid 3-dimensional framework that everything in the universe moves through, which I've been told is not the case. And that's where I start to hit the limits of my small mind. Because maybe relativity would keep you on the earth, because it has the highest gravitational effect on you. |
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Posts: 1,245
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#47 |
Space Cadet and Aczabel
Join Date: Aug 2000
Location: Kanab, UT, USA
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Posts: 40,584
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#48 | |
Space Cadet and Aczabel
Join Date: Aug 2000
Location: Kanab, UT, USA
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Quote:
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Posts: 40,584
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#49 | |
MVP
Join Date: Feb 2007
Location: Liberty, MO
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Quote:
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Posts: 15,872
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#50 | |
Ain't no relax!
Join Date: Sep 2005
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Did you know....
Ice worms. Seriously... Quote:
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Posts: 48,135
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#51 |
Wearing ballistic dog goggles.
Join Date: Mar 2001
Location: In the box.
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Posts: 25,343
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#52 |
Wearing ballistic dog goggles.
Join Date: Mar 2001
Location: In the box.
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Yes science is cool, but I like it best when put to a practical application and it’s often the simplest devices I find the most intriguing.
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Posts: 25,343
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#53 |
Banded
Join Date: Feb 2001
Location: Oz
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Posts: 41,728
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#54 |
Space Cadet and Aczabel
Join Date: Aug 2000
Location: Kanab, UT, USA
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Awesome presentation
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Posts: 40,584
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#55 |
Ain't no relax!
Join Date: Sep 2005
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Men are from Mars, Women are from Venus....
Ever wonder how that comparison came to be? It's because Venus is the most ass backwards object in our solar system, that behaves completely opposite of the other celestial bodies. Venus is the only planet in our solar system that rotates clockwise. Scientists have no idea how it came to spin backwards. It's as perplexing as female driving. Some think that it might have entered our galaxy after a collision with another large body, that blasted it our way and possibly reversed its rotation. Venus rotates very very slowly. So slowly, that it orbits the sun faster than it can make one whole rotation on its axis. In other words, Venus has a longer day than year. Venus has zero axis tilt. Meaning that if it had a thin atmosphere, it would have no seasons at all. It's the hottest planet by far. At one time, Venus was thought to be two separate bodies, because it was visible both day and night. Venus was known as the morning star (Eosphorus) and the evening star (Hesperus). |
Posts: 48,135
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#56 |
Ain't no relax!
Join Date: Sep 2005
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Posts: 48,135
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#57 |
Ain't no relax!
Join Date: Sep 2005
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Posts: 48,135
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#58 |
pie is never free
Join Date: Sep 2006
Location: the drivers seat
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Is it true that a volcano is just an angry hill?
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Posts: 93,485
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#59 |
Ain't no relax!
Join Date: Sep 2005
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Comets... the universe's Johnny Appleseed?
![]() On January the 2nd 2004, a NASA probe named Stardust, 240,000,000 miles from Earth, made a fly by of the Comet Wild 2, dipping into its geyser-like jets of ice particles and collecting a sample. The subsequent analysis of the samples startled and thrilled Astrobiologists, altered our model of planetary formation and evolution, and sobered and arrested the rest of the thinking world. Although the mission went off without a hitch, this was no easy feat. Stardust first had to first align itself with the comet, which was seen to be flying through space at 60,000 mph, and, then, it had to make a dive through through the clouds of dust, nearing the icy center. Having completed this, it then had to endure the heavy bombardment of icy material inflicted on it by geysers shooting up at supersonic velocities (almost 14,000 miles per hour, roughly 6x the speed of a speeding bullet). Surviving this intact, it flew through the clouds of material and 'scooped' up samples with its "flypaper-like" aerogel collection grid, returning home on January 15th, 2006. With this being the first time a comet's interior had been sampled in its natural habitat, scientists the world over waited in anticipation as to what the samples contained. After three years of analysis the team studying the samples made an disturbing but remarkable discovery, in the dust from the comet, traces of an amino acid called glycine were found. This may seem rather mundane until the realization that this molecule is an integral part of living things and that comets are fairly common in our Solar System and throughout galaxies. Glycine is one of the most common amino acids, and amino acids are, of course, the building blocks of proteins and are, obviously, essential for life. This discovery supports and furthers the idea that some of life's ingredients were delivered to Earth by meteorite and comet impacts long ago and implies that the fundamental building blocks of life could be prevalent in the universe (the odds of us finding this amino acid on our first sample of a comet in space being astronomical, excuse the pun). and strengthens the argument that life in the universe may be more common than rare. But where could these vital comets have come from, and how could they be delivered to Earth? The proposed idea is that comets orbiting in the Kuiper belt in a chaotic fashion were dejected after a collision around 3.9 billion years ago in the early stages of the solar system by a planet like Uranus or Neptune. After gaining momentum and "our" desired trajectory, they were sent hurtling towards the proto-Earth to deliver the building blocks for life, the period known as the Late Heavy Bombardment. During this period it is thought that every square inch of Earth was impacted by a mixture of meteorites and comets. Comets: not only are they a beautiful phenomena, leaving hundreds and thousands of miles long streams of material in a tail like fashion (due to the strains brought on by solar winds that can be viewed with a telescope and an acute knowledge of their whereabouts), but they also may be the facilitators of life. Earth, other planets and moons in our Solar System and beyond could have the rudimentary building blocks for life, thanks to these wonderful astral objects. http://blogs.discovermagazine.com/80...dient-of-life/ |
Posts: 48,135
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#60 |
PLAY GOOD FOOTBALL
Join Date: Aug 2006
Location: American Gardens Building
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It has occurred to me that Edison and Steve Jobs are the same person.
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Posts: 17,380
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