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Astrophysics: Non-Newtonian doubts over dark matter
| Content Provider | Scilit |
|---|---|
| Author | Pennicott, Katie |
| Copyright Year | 2000 |
| Description | Journal: Physics World Most cosmologists agree that less than a tenth of the universe is made up of normal or baryonic matter – mainly neutrons and protons. They believe that the remaining 90% consists of "dark matter" and, possibly, a mysterious substance known as "dark energy" or quintessence (see pp31–37). However, in the absence of any direct evidence for dark matter – such as the detection of a dark-matter particle – a small band of astrophysicists is arguing that this non-baryonic matter does not exist and that the laws of gravity need to be modified instead. Now Stacy McGaugh of the University of Maryland in the US is claiming that this so-called "modified Newtonian dynamics" has predicted features that are observed in the cosmic microwave background – the radiation left over from the big bang – that dark-matter theories did not predict (Astrophysical J. Lett. 2000 541 L33). |
| Related Links | http://iopscience.iop.org/article/10.1088/2058-7058/13/11/9/pdf |
| Ending Page | 9 |
| Page Count | 1 |
| Starting Page | 9 |
| ISSN | 09538585 |
| e-ISSN | 20587058 |
| DOI | 10.1088/2058-7058/13/11/9 |
| Journal | Physics World |
| Issue Number | 11 |
| Volume Number | 13 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2000-11-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Physics World History and Philosophy of Science Dark Matter |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy |
