Mobile version
spiked plus
About spiked
What is spiked?
Support spiked
spiked shop
Contact us
Summer school
Top issues
Arab uprisings
British politics
Child abuse panic
For Europe, Against the EU
Free speech
Jimmy Savile scandal
Parents and kids
View all issues...
special feature
The Counter-Leveson Inquiry
other sections
 Review of Books
 Monthly archive
selected authors
Duleep Allirajah
Daniel Ben-Ami
Tim Black
Jennie Bristow
Sean Collins
Dr Michael Fitzpatrick
Frank Furedi
Helene Guldberg
Patrick Hayes
Mick Hume
Rob Lyons
Brendan O’Neill
Nathalie Rothschild
James Woudhuysen
more authors...
RSS feed

abc def ghi jkl mno pqrs tuv wxyz index
Survey home
Survey responses
RSS feed
Anjana Ahuja
Julian Baggini
Philip Ball
Marlene Oscar Berman
Gustav VR Born
K Eric Drexler
Marcus Du Sautoy
Edmond H Fischer
John Hall
Tim Hunt
Wolfgang Ketterle
Leon Lederman
Matt Ridley
Raymond Tallis
Frank Wilczek
Lewis Wolpert
Charles Kohlhase
artist, science educator, and lead designer of numerous planetary missions

Over the past few decades, tremendous advances have been made by the people at the Jet Propulsion Labratory in Pasadena, California, in the art and science of deep space navigation.  Using both radiometric and optical data types, the ability to estimate the approach flight path relative to Mars, for example, varies from about 1 km at one day before closest approach down to tens of metres a few hours out. This permits extremely accurate control for space craft destined to either orbit the red planet or complete a demanding entry, descent and landing sequence through its thin atmosphere.

Charles Kohlhase is an artist, science educator, and lead designer of numerous planetary missions, including the Voyager grand tour of the outer planets and beyond and the Cassini-Huygens mission to the Saturnian system