Science Would it be possible to send a probe vertically above the solar system’s plane to observe the entire solar system and capture a mosaic photo? How far would it need to go to get a complete photo of everything?
Science What is the circle that Earth’s axis traces out in its 26,000-year precession cycle? What bright stars would be close to it?
Science When will Comet Halley next pass near Earth? Are there any other comets that will come close enough to our planet that people in the United States can see it at night?
