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Observations with the Hubble Space Telescope and other observatories showed that the Universe is expanding at an ever-increasing rate, implying that some day - in the very distant future - anyone looking at the night sky would see only our Galaxy and its stars. The billions of other galaxies will have receded beyond detection by these future observers.The origin of the force that is pushing the Universe apart is a mystery, and astronomers refer to it simply as "dark energy". This new, unknown component, which comprises ~75% of the matter-energy content of the Universe, will determine the ultimate fate of all. Determining the nature of dark energy, its possible history over cosmic time, is perhaps the most important quest of astronomy for the next decade and lies at the intersection of cosmology, astrophysics, and fundamental physics.
Knowing how the laws of physics behave at the extremes of space and time, near a black hole or a neutron star, is also an important piece of the puzzle we must obtain if we are to understand how the universe works. Current observatories operating at X-ray and gamma-ray energies, such as the Chandra X-ray Observatory, Fermi Gamma-ray Space Telescope, XMM-Newton, are producing a wealth of information on the conditions of matter near compact sources, in extreme gravity fields unattainable on Earth. Future missions such as LISA and the International X-ray Observatory, will push the frontier of knowledge of exotic astrophysical phenomena related to extreme regimes even further in space and time. For PCOS, the decade ahead holds the promise of exciting discoveries and new, bolder questions.
Originally posted by spy66
reply to post by ImaFungi
The first dimension must be infinite. Thereby a 1 dimensional object can not exist.
Question: have we ever observed a 1 dimensional object ?
Originally posted by ImaFungi
Originally posted by spy66
reply to post by ImaFungi
The first dimension must be infinite. Thereby a 1 dimensional object can not exist.
Question: have we ever observed a 1 dimensional object ?
i dont think in 3d space,,, 1 dimensional object is possible.......
Originally posted by spy66
Originally posted by ImaFungi
Originally posted by spy66
reply to post by ImaFungi
The first dimension must be infinite. Thereby a 1 dimensional object can not exist.
Question: have we ever observed a 1 dimensional object ?
i dont think in 3d space,,, 1 dimensional object is possible.......
How is 1 dimensional object possible unless it within 3d space?