Search results
Their gravity distorts the structure of spacetime, magnifying light from more distant objects. This effect, known as strong gravitational lensing, allows astronomers to study galaxies that would ordinarily be too far to see, map the distribution of mass in the galaxies doing the lensing, and measure the expansion rate of the universe.
- See All Staff
Alberto Accomazzi. Center for Astrophysics. Principal...
- Cosmology
What is the universe made of? How did it begin? How has it...
- Connecting the Dots
Two-and-a-half trillion pages of printed text — that's how...
- Gravitational Waves
The newest branch of astronomy doesn’t rely on light....
- Gravitational Lensing
Their gravity distorts the structure of spacetime,...
- Very Long Baseline Interferometry
What if we could build a telescope the size of Earth? That’s...
- See All Staff
11 paź 2024 · Gravity is what holds the planets in orbit around the sun and what keeps the moon in orbit around Earth. The gravitational pull of the moon pulls the seas towards it, causing the ocean tides. Gravity creates stars and planets by pulling together the material from which they are made.
13 lip 2004 · ESA / Science & Exploration / Space Science. We understand that gravity is a purely attractive force – it can only pull, never push – and that it is generated by any object with mass. But humankind has been trying to answer this question for thousands of years.
30 lip 2023 · To summarize, according to Einstein, gravity is the curving of spacetime by all the objects in it, combined with the "geodesic" (straight) motions of those objects through the...
Gravity is most accurately described by the general theory of relativity, proposed by Albert Einstein in 1915, which describes gravity not as a force, but as the curvature of spacetime, caused by the uneven distribution of mass, and causing masses to move along geodesic lines.
2 mar 2016 · Gravity is the curvature of the universe, caused by massive bodies, which determines the path that objects travel. That curvature is dynamical, moving as those objects move. In Einstein’s view of the world, gravity is the curvature of spacetime caused by massive objects. Image source: T. Pyle / Caltech / MIT / LIGO Lab.
According to the general theory of relativity, gravity can be understood as bends and curves in the fabric of space-time that affect the motions of galaxies, stars, planets, and even light. Anything with mass makes a dent in space-time, causing objects to be attracted to each other.
