... Because gravity in all these configurations acts as if mass were concentrated at the ... We now know that at the center of our galaxy is a huge black hole, whose mass has ... Other galaxies may well have similar concentrated centers. ...
... survey the whole sky and discover up to a million of active galactic nuclei (superheavy black holes) and up to 100 thousands of ... The high sensitivity X-ray monitor will perform the regular survey of our Galaxy in the X-ray range. ...
... To put it more straight forward: IF a shuttle is between the Earth and the sun, at that distance the Earth's gravity acting on it and the sun's gravity acting on it are equal to each other. ...
... To put it more straight forward: IF a shuttle is between the Earth and the sun, at that distance the Earth's gravity acting on it and the sun's gravity acting on it are equal to each other. ...
... of the black hole at the center of our galaxy, of Cavendish and E?tv?s (and in this ... seem to be the same on Earth and in distant stars, or even in other galaxies ... was tiny and because of the big masses, the instrument reacted agonizingly slowly ...
... Solar energy from fusion, also ultimate fate of Sun (S7) Plus added sections: --The black hole at the center of our galaxy (S7A ... Written by an active researcher in the field, it also covers relevant history and extends to recent achievements. ...
... Don't mix in the galaxy here : the galaxy is huge compared to the solar system and may have something like 100 billion suns, with a whopping black hole at the center--see . ...