Astrophysicists have once again enriched our knowledge of the cosmos with a new discovery: two small planets orbiting ...

rather than the sharp cutoff just inside Neptune's orbit that would occur without the influence of Planet Nine's gravitational pull. "I can't think of any other explanation that could possibly ...

they found that there should be a clearly discernible effect on asteroids orbiting inside Neptune's orbit as well. It's all part, says Batygin, of the way "the giant planets play soccer with these ...

All seven planets will be visible this time around, meaning Venus, Mars, Jupiter, Saturn, Mercury, Neptune and Uranus. (Earth, of course, is the eighth planet, and poor Pluto was demoted in 2006 ...

The alignment will involve Mercury, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune appearing in an arcing line from Earth's perspective. This occurs due to the planets' orbits bringing them ...