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The density of space junk peaks around 620 miles up, in the middle of so-called low-Earth orbit. That's bad, because many weather, scientific, and reconnaissance satellites circle in various low-Earth orbits.
If you're going to go into space, you have to have an objective, a mission. Where do you want to go? Earth orbit? The moon? Mars? What's the technology to get there? You develop the technology for the mission.
The nice thing about asteroids is that once you've found them, and once you have a good solid orbit on them, you can predict a hundred years ahead of time whether there is a likelihood of an impact with Earth.
You can, if you wish, think of it like the universe: Each case is a sun, and all the judges, lawyers and administrative personnel represent planets revolving around the case in fixed orbit, never getting closer.
Astronauts have been stuck in low-Earth orbit, boldly going nowhere. American attempts to kick-start a new phase of lunar exploration have stalled amid the realisation that NASA's budget is too small for the job.
Funding for the original manned Voyager Mars Program was scratched in 1968, before humans had gotten out of Low Earth Orbit. Mid-'60s plans for a Venus fly-by with astronauts actually flying by it met the same fate.
Words have no single fixed meaning. Like wayward electrons, they can spin away from their initial orbits and enter a wider magnetic field. No one owns them or has a proprietary right to dictate how they will be used.
I am excited to think that the development of commercial capabilities to send humans into low Earth orbit will likely result in so many more Earthlings being able to experience the transformative power of space flight.
Now, I've never flown in space; but the folks who have say that on landing day, you know, you've just spent maybe a week and a half, sometimes two weeks in orbit and you're used to the things happening slowly in space.
Words can have no single fixed meaning. Like wayward electrons, they can spin away from their initial orbit and enter a wider magnetic field. No one owns them or has a proprietary right to dictate how they will be used.
Our love could change the orbit of the earth. So, if a meteor ever comes hurtling towards earth with the guarantee of destruction, top scientists may call on us to, well, you know, do it like crazy for the sake of humankind.
Even in the slippery blur of heat and arms and noise, Lena affected everything in her wake, a pull as powerful as the moon to the tides, or the planets to the sun. I was caught in her orbit, even as she pulled away from mine.
When we can demonstrate that we can take off horizontally and put something into orbit, then we can begin to talk about increasing the amount of payload. But to say, 'I'm going to do that and put people into orbit' is a real leap.
Pluto's orbit is so elongated that it crosses the orbit of another planet. Now that's... you've got no business doing that if you want to call yourself a planet. Come on, now! There's something especially transgressive about that.
I want people to go into space, to orbit around the world a few times, even to stay there for 24 hours and then come back to where they took off. And I also want people with a low income to be able to do that, not only rich people.
It seems to me, thinking of it, that there must be some universal plan which set in motion the orbiting of the electrons about the nucleus and the slower, more majestic orbit of the galaxies about one another to the very edge of space
It seems to me, thinking of it, that there must be some universal plan which set in motion the orbiting of the electrons about the nucleus and the slower, more majestic orbit of the galaxies about one another to the very edge of space.
The star S0-2 orbits around Sgr A* every 16 years and will go through its closest approach in 2018. That's an opportunity to test Einstein's General Relativity theory through very precise measurements of this star's short period orbit.
It is fantastic to think that one day we may be able to access fuel, materials and even water in space instead of digging deeper and deeper into our planet for what we need and then dragging it all up into orbit, against Earth's gravity.
Contemporary curators orbit in the place of distribution and consumption, and less and less in the space of artists. I think it has become a lazy profession in regard to its relationship to the artists and the vigorous state of art making.
There is still some gravity where we are and even as far out as our moon. That is why our moon stays in orbit around the Earth. We don't feel the gravity up here because it is so much smaller than the force we feel when we are on the Earth.
Research into manned spaceflight is shifting from low-Earth orbit to destinations much further away, like Mars and the asteroid belt. But society will have to invent many new technologies before it can plausibly send people to those distances.
Bertrand Russell used a hypothetical teapot in orbit about Mars for the same didactic purpose. You have to be agnostic about the teapot, but that doesn't mean you treat the likelihood of its existence as being on all fours with its non-existence.
Things are going very smoothly. As expected, there are some minor glitches, and the eight minutes that it took us to get to orbit, we trained months and months for, and didn't have to use any of that preparation, other than being aware and ready.
No one can deny that Russia fired some big rockets and placed satellites into orbit. But there's been a deluge of poppycock about 'miraculous' scientific advances that enabled them to do it. Much of this analysis reflects ignorance about rocketry.
The mission of '8 Mile' is essentially to garner sympathy for a white rapper involved in an old-school shootout - a rap contest. This may be the final frontier for pop, more unbelievable than the prospect of launching a member of 'N Sync into orbit.
There are physical bodies, physical worlds that astronauts could visit, that we haven't found yet. Especially, there's these close approaches of asteroids. They pass within geosynchronous orbit sometimes, and they pass within the Earth and the moon.
Venus and Mars are our next of kin: they are the two most Earth-like planets that we know about. They're the only two other very Earth-like planets in our solar system, meaning they orbit close to the sun; they have rocky surfaces and thin atmospheres.
The miniaturization of electronics, which ultimately was driven by the marketplace, was started by NASA, because it costs money to get something into orbit. So you want to trim your electronics, miniaturize your electronics, miniaturize your satellites.
Point-to-point transit via low orbit could dramatically speed up international flights, connecting the world even further. And safe, consistent space travel opens up the possibility of commercial space stations, trips to the moon and exploration beyond.
It definitely helps to have been through the arm training flow before and to have used the arm on orbit, and it also gives me the confidence to know that our training facilities are really good, that when you get up there, you feel like you've been there.
Well, what I don't get is why do we exist? I don't mean how, but why.' I watched the fireflies of his thoughts orbit his head. He said, 'we exist because we exist. . .we could imagine all sorts of universes like this one, but this is the one that happened.
Changing the asteroid's velocity changes the time when the asteroid crosses Earth's orbit. After all, just because it crosses Earth's path doesn't mean there is necessarily going to be a collision. It has to cross Earth's path when the Earth is right there.
There is a project that's underway called the interplanetary Internet. It's in operation between Earth and Mars. It's operating on the International Space Station. It's part of the spacecraft that's in orbit around the Sun that's rendezvoused with two planets.
There are thousands of asteroids whose orbit in the Solar System crosses that of Earth. And we have a little acronym for them - NEOs: near Earth objects. And our biggest goal is to try to catalogue them, so we know in advance if one is going to put us at risk.
The world, the human world, is bound together not by protons and electrons, but by stories. Nothing has meaning in itself: all the objects in the world would be shards of bare mute blankness, spinning wildly out of orbit, if we didn't bind them together with stories.
Every type of ring behavior we have seen around Jupiter, Uranus, or Neptune can be found in orbit around Saturn. And Saturn's ring system offers the greatest promise of understanding processes in operation within all disk systems, not just those found around planets.
I'm no expert on types of cars. As far as i'm concerned, you could send all the cars in the world through a compactor and shoot them out into the stratosphere and put them in orbit around Mars. Except, of course, the taxis that have to be at my disposal when I need them.
Within NASA, the shuttle is perhaps the least-groundbreaking project. Recall that Apollo was about creating brand-new technologies that did something unprecedented - putting men on the moon. The shuttle is, by comparison, a relic designed to make going into orbit routine.
The dead spacecraft in orbit have become a permanent fixture around our planet, not unlike the rings of Saturn. They will be the longest-lasting artifacts of human civilization, quietly circling the Earth until the sun turns into a red giant about 5 billion years from now.
While satellite operators can dodge large pieces of debris and armour satellites to withstand the impact of smaller fragments, with the need for a growing number of satellites in orbit we must be able to monitor the space highways and to gradually clear it of obstructions.
The dead spacecraft in orbit have become a permanent fixture around our planet, not unlike the rings of Saturn. They will be the longest-lasting artifacts of human civilization, quietly circling Earth until the Sun turns into a Red Giant, about five billion years from now.
The key to proving that there's a black hole is showing that there's a tremendous amount of mass in a very small volume. And you can do that with the motions of stars. The way the star moves around the center of the galaxy is very much like the way the planets orbit the sun.
When the space shuttle's engines cut off, and you're finally in space, in orbit, weightless... I remember unstrapping from my seat, floating over to the window, and that's when I got my first view of Earth. Just a spectacular view, and a chance to see our planet as a planet.
During my time in orbit, I lost bone mass, my muscles atrophied, and my blood redistributed itself in my body, which strained my heart. Every day, I was exposed to ten times the radiation of a person on Earth, which will increase my risk of a fatal cancer for the rest of my life.
I recall a lecture by John Glenn, the first American to go into orbit. When asked what went through his mind while he was crouched in the rocket nose-cone, awaiting blast-off, he replied, "I was thinking that the rocket has 20,000 components, and each was made by the lowest bidder."
Ralph Ellison is a classic work of erudition, grace, and elegance. Rampersad offers us an Ellison whose gifts and warts orbit the same universe of creative genius. Like Ellison's work, Rampersad's text wrestles eloquently with difficult truths about race, politics, and American life.
Look back to the cross, and the disciples gazing on it in terror from afar, and then look around on the nations that are influenced by the faith that there centres - and note the change! Then take these elements, established in history, and calculate the orbit Christianity is to fill.
The C Mission was the first command and service module. The D Mission was the first mission involving a lunar module in a manned fashion and the command module, and the E would take this lunar module and the command module into a very high elliptical orbit, about 4,000-mile-high orbit.
It's not easy to get human beings into orbit. So far only three nations have been able to do that, with all the resources that they put together. And I'm just a little skeptical that that's going to be done by the private sector without making use of what has been done by the government.