WASHINGTON, Feb 14 (Reuters) - Astronomers have observed a planetary system that challenges current planet formation theories, with a rocky planet that formed beyond the orbits of its gaseous ...

One of the longest stellar dimming events ever observed was likely caused by the gigantic saucer-like rings of either an unseen brown dwarf or "super-Jupiter" blocking its host star's light, ...

An artist’s impression of the stellar dimming event caused by a brown dwarf or super-Jupiter with massive rings (foreground) forming an opaque “saucer” through which some light from the star ...

Hunt for the names of mysterious dwarf planets, most of which orbit on the fringes of our solar system When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

A federal appeals court ruling on New Year's Eve blocked Hawaii from enforcing a climate change tourist tax on cruise ship passengers, a levy that was set to go into effect at the start of 2026.

A federal judge's ruling clears the way for Hawaii to include cruise ship passengers in a new tourist tax to help pay for the impacts of climate change, a levy set to go into effect at the start of ...

Astronomers on Mauna Kea found the first space object on which NASA’s Roman Space Telescope can test its imaging technology. A new “massive planet” also was found, the W.M. Keck Observatory said in a ...

In an ancient star system expected to be stable and dormant, scientists found a 3 billion-year-old white dwarf star still tearing apart massive quantities of rock. “The rate we’ve seen rock consumed ...

Astronomers recently peered deep into space and found that an old, faint white dwarf named LSPM J0207+3331, located about 145 light-years away, is still consuming the rocky remains of its former ...

Material around Chiron, a small icy world in the far reaches of the solar system, may be taking shape into a ring system of its own. The rare event is unfolding in real time, giving astronomers a ...