ScienceDaily: Astronomy News |
- Mars-mimicking chamber explores habitability of other planets
- Simple, like a neutron star: How neutron stars are like (and unlike) black holes
- Exploding stars prove Newton's law of gravity unchanged over cosmic time
| Mars-mimicking chamber explores habitability of other planets Posted: 25 Mar 2014 08:29 AM PDT A research team in Spain has the enviable job of testing out new electromechanical gear for potential use in future missions to the Red Planet. They do it within their Mars environmental simulation chamber, which is specially designed to mimic conditions on the fourth planet from the sun -- right down to its infamous Martian dust. |
| Simple, like a neutron star: How neutron stars are like (and unlike) black holes Posted: 25 Mar 2014 06:44 AM PDT For astrophysicists neutron stars are extremely complex astronomical objects. Research has demonstrated that in certain respects these stars can instead be described very simply and that they show similarities with black holes. |
| Exploding stars prove Newton's law of gravity unchanged over cosmic time Posted: 24 Mar 2014 08:02 PM PDT Australian astronomers have combined all observations of supernovae ever made to determine that the strength of gravity has remained unchanged over the last nine billion years. Newton's gravitational constant, known as G, describes the attractive force between two objects, together with the separation between them and their masses. It has been previously suggested that G could have been slowly changing over the 13.8 billion years since the Big Bang. But researchers have now analyzed the light given off by 580 supernova explosions in the nearby and far Universe and have shown that the strength of gravity has not changed. |
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