On Wednesday evening at Firefly Aerospace's test site about an hour north of Austin in Central Texas, some sort of anomaly occurred. The Burnet County Sheriff's Office reported that the incident ...

A still from a video clip posted by Firefly Aerospace Jan. 22 of its Alpha launch vehicle being loaded with liquid oxygen ahead of a static-fire test. The company deleted the tweet after a "test ...

Taking a pregnancy test too early can procure a false negative result. How do you know when it's time to take one?