Hale-Bopp
Hale-Bopp
Large and exceptionally active comet, which in March 1997 made its closest fly-by to Earth since 2000 BC, coming within 190 million km/118 million mi. It has a nucleus of approximately 40 km/25 mi and an extensive gas coma (when close to the Sun Hale-Bopp released 10 tonnes of gas every second). Unusually, Hale-Bopp has three tails: one consisting of dust particles, one of charged particles, and a third of sodium particles.
Hale-Bopp was discovered independently in July 1995 by two US amateur astronomers, Alan Hale and Thomas Bopp.
Hale-Bopp was discovered independently in July 1995 by two US amateur astronomers, Alan Hale and Thomas Bopp.
© RM 2009. Helicon Publishing is division of RM.
Encyclopaedia Search
Advertisement starts
Advertisement ends
Advertisement starts
Advertisement ends
Country Search
Dictionary search
Tajikistan Flag
Health Search
Advertisement starts
Advertisement ends
Skip to page content | Text onlyGraphical version of this page
Tiscali Quicklinks. Please visit our Accessibility Page for a list of the Access Keys you can use to find your way around the site, skip directly to the main navigation, to the page content, or to more links within reference.
- Wednesday , November 25, 2009
- Make Tiscali my homepage
Page Footer
Access keys
You will need to use different key combinations in order to use access keys depending on your internet browser, find out which on our accessibility page.
- (0) Navigate to Accessibility page.
- (1) Navigate to Home page.
- (2) Navigate to My email.
- (3) Navigate to My Account.
- (4) Navigate to Site Map page.
- (5) Navigate to Contact us page.
- (6) Navigate to Members channel.
- (7) Navigate to Services channel.
- (8) Navigate to News & Info channel.
- (9) Navigate to Entertainment channel.
- ([) Skip down to the Primary navigation block.
- (]) Skip down to the more links within this section block.
- (=) Bypass all navigation and jump to the content.
- (x) Text only version of this page.
