In the fictional universe of "Star Trek," the alien Spock comes from a world called Vulcan in the triple-star system 40 Eridani.
Vulcan was destroyed in a previous movie, forcing Spock's race to immigrate to a planet called New Vulcan.
While Vulcan is one of the most well-known worlds in science fiction, the planet is entirely fictional.
However, the star system it belongs to in "Star Trek" is for real.
And scientists haven't ruled out Earth-like planets in that system, 40 Eridani, which is 16.5 light-years from Earth.
"Could there be an Earth-like planet in this system?
We have no way of knowing that now," Karl Stapelfeldt, chief scientist of NASA's Exoplanet Exploration Program, said in a statement.
If an Earth-like world does exist, he added, "we don't yet have a way to detect it, but NASA is working on the technology to make it possible." NASA principally searches for Earth-like worlds using the Kepler space telescope.
The telescope, however, focuses on looking for planets that are very far away from Earth.
NASA's planned orbiting observatory TESS (Transiting Exoplanet Survey Satellite), which will launch next year, can look at closer worlds around brighter stars — but NASA has not made it clear whether TESS can search for a planet like Vulcan.
When Spock was growing up, he would have been treated to triple sunsets on his home planet.
The star his planet orbited, 40 Eridani A, is a dwarf star that is a short distance from the other stars in the system, a binary pair including 40 Eridani B (a white dwarf) and 40 Eridani C (a red dwarf). So for Vulcan to be habitable, it would need to huddle closer to 40 Eridani A than Earth does to the sun.