Totality occurs at 11:26 p.m. when the entire moon is under the umbra. This is when the reddish hues of the "blood moon" will be on display. As the moon exits the umbra by about 12:31 a.m., the ...

During an eclipse, two shadows are cast, writes NASA. The first and innermost darkest shadow is called the umbra (pronounced UM bruh). This dark cone-like shadow gets smaller the further it gets ...

British Virgin Islands-based Umbra Technologies Ltd. accuses cybersecurity firm Fortinet Inc. of infringing five patents with networking p ...

1:09 a.m.: A partial eclipse begins as the moon enters Earth's umbra and starts to darken. To the naked eye, the moon should look like a bite is being taken out of the lunar disk. 2:26 a.m.: Totality ...