Do they also have magnetic fields to protect emerging life? A new analysis looks at one type of exoplanet – super-Earths up to five times the size of our own planet – and concludes that they probably do have a magnetic field, but one generated in a totally novel way: by the planets...
but that isn't always the case. Scientists have also managed to observe lensing examples where, because the light traveling around the lens takes different paths of different lengths, different images arrive at different times,as in the caseof one particularly interestingsuper...
We can consider the gravitational attraction exerted by the other planets to be negligible, therefore the greatest effects on the Earth will be those produced by the sun and the moon. These three bodies attract each other, however, the greatest effect is in the Earth-moon interaction. Both ...
Earth scientists may examine the Earth's core or its magnetic field, he says. How to Become an Earth Scientist Although a majority of earth scientists have a bachelor's degree, this credential isn't a requirement for all earth science jobs. "Most earth scientists have a four-year college ...
the rest of the solar system. Though we can’t send probes to the centres of other planets, clues to their interior composition sometimes fall at our feet in the form of meteorites. These are remnants of the early solar system that tell us about the conditions in which the planets formed...
The doomsday has changed this rule. If human beings have developed intointerstellarcivilization, they can only emigrate to other planets when they are overcrowded. If the aborigines of the colonized planet don't want to, then something like Avatar will happen. If human beings have not developed ...
But we don't yet know what the dark matter is made of. Does dark matter have mass? If dark matter exists, it must have mass. Massless dark matter would not behave in ways that solve the problems that dark matter addresses. What does dark matter do?
Many galaxies like ours don't have AGNs, which are powered by feeding supermassive black holes, but even those that do are not necessarily blasting out radiowaves or "radio loud." It is only these AGNs that are defined as radio galaxies. What fuels "radio loud" active galactic nuclei?