President Donald Trump and his NASA administrator are reviving the Pluto debate again — apparently at the urging of “Star ...

The renewed push is stirring controversy nearly two decades after the dwarf planet classification was introduced. Renewed ...

HD 137010 b is an Earth-size planet candidate with a 355-day orbit around a nearby star, making it a top follow-up target.

For centuries, astronomers faced the challenge of classifying objects in space based on their appearance. When observing an ...

Discovered in 1930 at the Lowell Observatory, Pluto was demoted as a planet in 2006. Some want President Trump to take action via executive order.

NASA chief Jared Issacman appears to be among those who support Pluto being reclassified as a planet. Could President Trump sign an executive order?

President Donald Trump may be one step closer to making Pluto great again. NASA Administrator Jared Isaacman endorsed the idea of Trump making Pluto a planet again in an exclusive interview with the ...

NASA Administrator Jared Isaacman endorsed the idea of Trump making Pluto a planet again in an exclusive interview with the Daily Mail at the John F Kennedy Space Center in Florida .

For no explainable practical reason, humans are enamored with – and even empathetic toward – specific inanimate objects. Our first car. A choice coffee mug. And for a particular subset of the ...

Flagstaff, Arizona (CNN) — For no explainable practical reason, humans are enamored with – and even empathetic toward – specific inanimate objects. Our first car. A choice coffee mug. And for a ...