If you could measure Earth's gravity with infinite precision, and did so both with Earth and its full population, and Earth with no people, would there be a direct difference in gravity? Is this ev…

A project I'm working on involves getting data from SDSS DR12, and cross-matching it with NED, as described in Section 2 of this paper: 2.1 The sample From the SDSS Data Release 12 (DR12, Alam et…

There is no edge to the atmosphere, and therefor I expect there would be a gradual reduction of concentrations of bacteria as we ascend into space. Logically anaerobic bacteria should be able to ob…

The latest info on black holes with regard to their formation is that since space and time go to infinity at the event horizon, from an outside perspective nothing ever enters a black hole, and it…

Thanks to radio telescopes, numerous different sources of radio pulses have been discovered, classified as pulsars. The periods of vibration range from several seconds to a tiny fraction of a second, as confirmed by optical and X-ray observations. These periods are so constant that only the most precise clocks can detect a slight increase in the average pulse interval and only in a few Few pulsars.

The volcanoes One of the most spectacular manifestations of the geological activity of the Earth are, without a doubt, the volcanoes. There are different types, depending on the way the lava leaves, and they are distributed by specific regions of the planet while, in others, there is not. Volcanoes are also the only places where we can come into contact with the materials inside the crust or the mantle, so they are of great interest to the sciences.