The planet, formally named Janssen but also referred to as 55 Cancri e or 55 Cnc e, orbits its host star Copernicus so closely that the sizzling world completes one orbit in less than one Earth day.

The a rocky world, 40 light-years away from us, orbits its star Copernicus 70 times closer than Earth orbits the sun — meaning one of its years lasts just 18 hours. But Janssen may not have ...

On March 9, 1497, together with Novara, Copernicus made his first known astronomical observation: At 11 p.m. both watched as the moon briefly eclipsed a distant star, Aldebaran, an event that cast ...

Nicolaus Copernicus was the first to demonstrate that the earth orbited the sun, upsetting the prevailing notion that the earth was the center of the cosmos. But the Polish astronomer died in ...

Copernicus, a Polish astronomer who lived in the 16th century, is believed to be one of the early European scientists to have put forward the theoretical model that the sun was the center of the ...

A 500-year-old compass thought to have belonged to astronomer Nicolaus Copernicus has been found in a castle in Poland. The compass, made of copper-alloy, was found by amateur archaeologists ...