A new dwarf planet, discovered beyond Neptune and described as Pluto's 'cousin,' could void the hypothesis of a Planet X in ...

A small team led by Sihao Cheng, Martin A. and Helen Chooljian Member in the Institute for Advanced Study's School of Natural ...

In a thrilling development that challenges long-held assumptions about the outer reaches of our solar system, astronomers ...

The diameter of Pluto, meanwhile, is 2,377 km. Further observations, potentially using radio telescopes, are needed to determine the object's exact size. Cheng discovered the object as part of an ...

Pluto has become a beloved object in our solar system ever since the International Astronomical Union (IAU) reclassified it from a planet to a dwarf planet back in 2006 – a decision which has ...

At the very edge of our solar system, beyond the grasp of Neptune and even past the icy sprawl of Pluto’s domain, a new ...

Many of its distant cousins appear to “cluster” together ... That date is rich with coincidence. Pluto was discovered that very same year. And the Institute for Advanced Study, where Cheng ...

Sea levels will rise — by metres, not centimetres — and the time to prepare is now. Drawing on ancient clues and the latest ...

Save the sillier movies for Independence Day. Below are some choice movies that actually feel right for Memorial Day.

A haze of ice crystals in the air created a halo around the low sun as three snowmobiles thundered onto the sea ice on a ...

as my young cousin discovered. For all the Americans in a similar situation, and there are many, news this week is bringing clarity. On April 21 the Department of Education issued a clear policy ...