"The extraordinary results are an essential step toward understanding the initial conditions that lead to the formation of ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. Are planets in the solar system that are closer ...

How Many Planets Are There in the Solar System? There are 8 planets in our solar system. The planets orbit the Sun in ...

Explore space with these fun solar system worksheets. Kids will learn about planets ... these printables make astronomy exciting. From planet matching to moon phase trackers, these free science ...

The word “planet” came from the ancient ... I’m a space scientist with a passion for astronomy and the exploration of the Solar System. I received my Ph.D. in physics in 1994, about the ...

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system.

Astronomers have discovered a rare in-sync solar system with six planets moving like a grand ... system like ours and do what I call forensic astronomy, looking back over time to imagine what ...

Pluto was reclassified as a dwarf planet in 2006. Our solar system may have a ninth planet ... In 1983, the Infrared Astronomy Satellite surveyed the universe for a year. In 2006, the Japanese ...

The planets of the solar system were lined up in the sky Wednesday ... horizon to observe," said Vahé Peroomian, a professor of astronomy and physics at the University of Southern California.