-
Contents
- Sweet Confusion: Does high fructose corn syrup deserve such a bad rap?
- Closed Thinking: Without scientific competition and open debate, much psychology research goes nowhere
- subscribe
- give a gift
- renew
- RSS Feeds
- email alerts
- Digital Edition
- Podcast
- Past issues
-
Contents
- Better chow yields more milk: A more nutritious form of corn for dairy cows boosts farm profits, teen investigator finds
- Fuzzy future: Kids may suffer impaired vision from spending too little time outdoors, studies suggest
- Building with moon rocks: Working on the moon with lunar soil and grit could prove easier, more efficient and less costly than using earthly materials
Web edition: December 16, 2011
Print edition: December 31, 2011; Vol.180 #14 (p. 4)
EARTH AND PLANETS FORMED FROM DUST DRAWN TO SUN — The Earth and all the other planets of the solar system were formed from tiny dust particles accumulating around the sun as it passed through a vast dust cloud in space. This theory on the origin of the solar system was proposed in London by Prof. R.A. Lyttleton of Cambridge University, Cambridge, England.... The sun must have passed through several hundred if not thousands of dust clouds during its lifetime of several billion years. During one of these encounters, the sun’s speed relative to the cloud must have slowed down to a little more than a mile a second in order to accumulate the necessary amount of dust for later planet formation.
Please alert Science News to any inappropriate posts by clicking the REPORT SPAM link within the post. Comments will be reviewed before posting.
You must register with Science News to add a comment. To log-in click here. To register as a new user, follow this link.