The Panel on Particle Astrophysics and Gravitation (PAG) will identify and suggest to the Astro2020 decadal survey committee a program of federal investment in research activities exploring areas at ...

For more than a century, gravity and quantum physics have stubbornly resisted a common language, one describing the smooth curvature of spacetime, the other the jittery statistics of particles and ...

IN a recent letter (NATURE, December 25, p. 412) and elsewhere I have expressed doubt as to the security of the inferences regarding the influence of gravitation on the light from distant celestial ...

Gravitation is a force by the virtue of which objects get attracted towards each other because they have mass. There are various laws and principles which govern this attractive force in the whole ...

Get the CBSE Class 9th Science chapter, Gravitation, Important topics & questions to prepare for CBSE Class 9 Science exam, 2017-2018. This will provide you the idea that what type of questions will ...

The high speed of stars and apparent presence of 'dark matter' in the satellite galaxies that orbit our Milky Way Galaxy presents a direct challenge to Newton's theory of gravitation, according to ...

Large masses – such as a galaxy – curve space-time. Objects move along a geodesic. If we take into account that space-time itself has quantum properties, deviations arise (dashed line vs. solid line).