4 ms·
See this press release: http://www.cfa.harvard.edu/press/2008/pr200819.html http://www.cfa.harvard.edu/press/2008/pr200819.html
by HendrikR 18y ago
See this press release: http://www.cfa.harvard.edu/press/2008/pr200819.html http://www.cfa.harvard.edu/press/2008/pr200819.html