All of Gliese 581's planets have been found through radial ... than the previously reported 3.1 Earth masses, and an orbital period of 32, not 36, days. Nevertheless, this supposed planet would ...
We were looking for signs among all the potential periods that ... almost 1.5 times the orbital period of the next planet, which takes 13,673 days. This in turn is almost exactly 1.5 times the ...
The planets are all on the same orbital plane because, during the formation of the solar system, a massive cloud of dust and gas collapsed under its own gravity and flattened into a disk.
Paleoclimate and archaeological evidence tells us that, 11,000-5,000 years ago, the Earth's slow orbital ... Humid Period exemplifies the dramatic climate transitions that our planet experiences ...