Gravity Effects Quotes

Spacetime tells matter how to move; matter tells spacetime how to curve.

Gravity on Earth provides a force that keeps our bones and muscles working. In the microgravity of space, our bones and muscles are not taxed, so they begin to atrophy.

The trouble with plastic surgery is that after 10 years, gravity wins out and you have to have another one in a year or so.

Black holes do not emit light, so you visualize them through gravitational lensing - how they bend light from other objects.

Life as an astronaut in space is a very interesting one. There are things we all take for granted here on earth, like gravity, that can make things a bit challenging. One of the fun things about getting here is the zero gravity and floating around. But it also makes things very difficult.

A year is a long time to live without the human contact of loved ones, fresh air, and gravity, to name a few.

As the spinal cord increases, it makes you taller. However, after landing on the Earth, you shrink a bit. What was worrisome was that some of the wrinkles, which had disappeared there, came back.

Mars missions will require up to three years in reduced gravity, so we need to make sure astronauts can not only survive but thrive as they move outward to explore this new world.

The forties are the time when you begin to take notice of certain aches and pains. Your body and brain behave in inexplicable ways: Less hair on your head, more in your ears and nostrils. More memories in the bank, less synaptic firepower with which to access them. Gravity has started to show its inexorable pull.

The microgravity or the very, very low amount of gravity that we have up in space forces some changes in different processes. It forces changes in us as human beings.

Your arms don't hang by your side in space like they do on Earth because there is no gravity. It feels awkward to have them floating in front of me.

A lot of scientists on Earth think of things that they could do in zero g. Things like the way metals cure, for example, and the way fluids react in space can tell us a lot about some of the unknowns we have on Earth.

Fibers made on Earth, and thus made in the presence of gravity, have impurities and defects in the glass that adversely affect transmission speed and quality.

You can do more science on the ground than you can in space for the same amount of money. But there is some science you can not do on the ground.

Other anatomical changes associated with long-duration space flight are definitely negative: the immune system weakens, the heart shrinks because it doesn't have to strain against gravity, eyesight tends to degrade, sometimes markedly (no one's exactly sure why yet). The spine lengthens as the little sacs of fluid between the vertebrae expand, and bone mass decreases as the body sheds calcium. Without gravity, we don't need muscle and bone mass to support our own weight, which is what makes life in space so much fun but also so inherently bad for the human body, long-term.

Small samples in the centrifuge will spin at varying rates to create synthetic gravity, like the gravity of Mars or the gravity of the moon, and measure how the specimens respond within the centrifuge.

Every month, we weigh ourselves to make sure we aren't losing weight. I really have been eating more than I do on Earth to make sure I don't lose too much weight.

While you're in space, you grow in height! Without the constant force of gravity on your spine, it stretches out, and you're actually taller when you land. It doesn't last long though.

... the current of time slowing down in the gravitational field of oblivion.

Do you really expect me to say gravity hasn't taken its toll? No. But as I'm earning these lines [in my face], I'm making an aesthetic choice.

The reason space missions need artificial gravity is clear: humans simply did not evolve to live in zero gravity.

But although the attractive virtue of the earth extends upwards, as has been said, so very far, yet if any stone should be at a distance great enough to become sensible compared with the earth's diameter, it is true that on the motion of the earth such a stone would not follow altogether; its own force of resistance would be combined with the attractive force of the earth, and thus it would extricate itself in some degree from the motion of the earth.

Gravity is so strong that space is bent round onto itself, making it rather like the surface of the earth. If one keeps traveling in a certain direction on the surface of the earth, one never comes up against an impassable barrier or falls over the edge, but eventually comes back to where one started.

Just like the bones and muscles, the heart is designed to work in one gravity here on Earth, so when you put the heart in space, it operates differently and changes shape.