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 ...

Learn more about L 98‑59 d, an exoplanet 35 light‑years away with a deep global magma ocean ...

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?

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 ...