All posts tagged "Star Formation"

A star has been found that may be a sister of our Sun, born in the same cloud of gas and dust in our galaxy, the Milky Way. The Sun, the Earth and the other planets coalesced some 4.54 billion years ago within a such a cloud, probably with thousands of other stars. This age comes from radiometric measures of radioactive isotopes and their decay products in meteorites, the oldest rocks we can handle, while there is plenty of observational evidence for ongoing star formation elsewhere in the galaxy.