Some scientists have been poking at the foundations of dark energy, but many say the concept remains on solid, if mysterious, ground.
That’s when the two stars in the binary system V Sagittae are set to merge in a spectacularly luminous fashion.
The SETI Institute leads the hunt for extraterrestrials, which has entered a new phase with myriad planets to focus on.
Data from the second probe to reach interstellar space helps scientists form a more complete picture of the boundary between the sun and the stars.
Researchers find plausible, alien-free explanation for observations of star KIC 8462852.