If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth.

Sydney, an astronomy intern at Zion National Park with Scientists in Parks, answers some of the internet’s most asked ...

To learn more about parallax, try the activities in Project ... and rockets travel through space at 25,000 miles/hour. Imagine that with new technolgy you can build a time machine that travels ...

Proper motion Stars move across space and shift in relation to other ... ParallaxAnother reason for the apparent changes in ...

They realized that this shifting occurred because of a parallax effect when the Earth was on opposite sides of the Sun. In this activity, students will use a piece of black paper to create a ...