In “Rocket Dreams,” Christian Davenport revels in the struggle between the billionaire moguls Elon Musk and Jeff Bezos to leave the Earth behind.

At a Seattle summit, space industry executives said AI and other tech trends are opening up new opportunities on the final ...

S284p1 sits at the edge of the Milky Way about 15,000 light-years from Earth. As superheated gas falls onto the star, it gets redirected as narrow beams, confined by powerful magnetic fields. The jets ...