The object’s aphelion – the farthest point on the orbit from the Sun – is more than 1,600 times that of the Earth’s orbit,” said Sihao Cheng of the Institute for Advanced Study, discussing the ...

A new member of the solar system has been detected, the second-largest of its kind, suggesting there may be more like it ...

Pluto was long considered the ninth planet of the solar system, but changes to the definition of planet got it kicked out of ...

According to astronomers, the last time this planet came close to the Sun was in 1930. In the same year, Pluto was discovered ...

The lone planet confirmed to be in the system is squeezed in between the two, orbiting at a distance similar to Earth's ...

"The new coronal adaptive optics system closes this decades-old gap and delivers images of coronal features at 63 kilometers resolution—the theoretical limit of the 1.6-meter Goode Solar Telescope," ...

PUNCH’s vibrant first images reveal the solar wind in a whole new light — literally. This ambitious NASA mission is set to ...