It is in this spirit that we tackle seven of the most crucial “when” questions in a special package beginning here “When did time begin? Hint: It wasn’t at the big bang “. Each piece ...

Based on this new evidence, planetary systems had the potential to emerge before many of the first galaxies formed. The availability of water at the time of planetary formation would have enabled the ...

Early Sunday, clocks sprang forward an hour marking the beginning of this year’s Daylight Saving Time. We won’t touch our clocks again until Nov. 2. But when, exactly, does that happen?