Space science
Does the 9th planet actually exist in the Solar System?
Over the years, astronomers have been searching for the existence of the 9th planet in the Solar System.
Sedna
Browse ScienceInfo articles and explainers related to Sedna.
Topic archive
Articles about Sedna
7 published items.
Space science
Minor Pluto - The celestial body farthest from the solar system
Astronomers discovered that the new dwarf planet is about half the size of Pluto in the furthest part of the solar system.
Space science
8 planets are not true to haunt the scientific world
The existence of the planets below has more or less influenced the traditional view of astronomers.
Space science
Detecting asteroids in the solar system's
After a decade of searching, astronomers have discovered the second dwarf planet with orbit far above Pluto, but has yet to explain why the planet is there.
Space science
Planet X
At a distance too far to be caught in the sights of earth-glass telescopes, planet X can create gravitational forces acting on icy celestial bodies passing by Neptune, h…
Space science
Debates about Pluto
Taking music, camera lights and audience applause as a backdrop, two debators and a mediator walked into the auditorium.
Videos
Video: Asteroids with orbit cannot be explained
Sedna's elliptical orbit about 150 to 150 billion kilometers from the Sun is still a mystery to astronomers.