"We consider this phenomenon as a promising candidate to explain the fact that the solar activity is much more benign than that of other sun-like stars." ...

As she embarks on this new chapter of her life, the bride-to-be is getting loads of support from her younger sister. So far, Serena Williams has already checked the bachelorette party off the list.

Recent U.S. Open champions Aryna Sabalenka, Iga Swiatek and Coco Gauff lead the women's field when singles play begins Sunday ...