Is the fabric of space made of eyes or ears? Reconciling the vacuum energy with dark energy is a problem that scientists have been working on for decades, without much success. })(); But almost everything that is out there, is hydrogen. Since space has almost no matter it would be impossible to curve space. } document.getElementById("af-form-1264678350").className = 'af-form af-quirksMode'; If the space was curved around Earth you might need different energy mathematics to counteract the curved space. Two oxymorons exist in this idea: that space and time is curved (curving of massless things) and that a photon is a massless particle (particles have mass). Planets are close enough to Earth that their beam of light is too large to be "scintillated" like stars. My goal is to show that gravity is only an attractive force that occurs between matter. -->. if (navigator.userAgent.indexOf('FBIOS') !== -1 || navigator.userAgent.indexOf('Twitter for iPhone') !== -1) { A moulding commonly used in framing oil paintings. This service may include material from Agence France-Presse (AFP), APTN, Reuters, AAP, CNN and the BBC World Service which is copyright and cannot be reproduced. whoah this blog is excellent i really like studying your posts. if (document.getElementById("af-footer-1264678350")) { The Fabric of the Cosmos: Space, Time, and the Texture of Reality (2004) is the second book on theoretical physics, cosmology, and string theory written by Brian Greene, professor and co-director of Columbia's Institute for Strings, Cosmology, and Astroparticle Physics (ISCAP). Again another 2D visualization is needed: This shows how the gravitational potentials of two stars interact in the fabric of space-time as they orbit, causing the radiation of gravitational waves. For instance the magnetic field around Earth or around a magnet creates a field. On the very smallest scales, it appears there is a minimum "resolution" to the universe, called the "Planck length", after the physicist Max Planck. Relevance. He postulated that gravity distorts space so that objects including light from stars must follow a curved path around large bodies of gravity such as stars and black holes. Major funding for "The Fabric of the Cosmos" is provided by the National Science Foundation, and the Alfred P. Sloan Foundation. // Special handling for facebook iOS since it cannot open new windows Farfetched? A person has Mass so must have energy. Douglas Adams was right. In a few hundreds of billions of years, everything but our nearest neighbouring galaxies will have moved out of reach: no matter how fast future humans might travel, we'll never be able to reach anything else. And certainly, thanks on your effort! Ionised hydrogen is almost totally invisible, except for one amazing feature: it makes things twinkle. Atomic and molecular hydrogen are relatively easy to find because they absorb and emit particular wavelengths of light, giving each a unique telltale signature that astronomers can measure.