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  Every single launch... ever!

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Author Topic:   Every single launch... ever!
Robert Pearlman
Editor

Posts: 27328
From: Houston, TX
Registered: Nov 1999

posted 09-14-2007 12:56 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
From Popular Mechanics:
The First 50 Years of Space: Every Single Launch... Ever!

quote:
It is the first of its kind: a graph representing every single space launch, starting with Sputnik 1 on Oct. 4, 19576039 spacecraft in all.
The graph is based on a database of launches compiled by Jonathan McDowell, an astrophysicist, "fanatic space historian" and the editor of Jonathan's Space Report.

cspg
Member

Posts: 4046
From: Geneva, Switzerland
Registered: May 2006

posted 09-15-2007 12:35 AM     Click Here to See the Profile for cspg   Click Here to Email cspg     Edit/Delete Message   Reply w/Quote
Jonathan Space Report is a fantastic source of info and I've used it to compile my own launch database. As of June 15, 2007, I have 4,837 launches! Does this graph include suborbital flights (I don't)? Or does it illustrate the number of satellites placed into orbit (which would explain the difference between Jonathan's total and mine)?

Chris.

Robert Pearlman
Editor

Posts: 27328
From: Houston, TX
Registered: Nov 1999

posted 09-18-2007 01:44 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
Indeed, the graph appears to include both suborbital missions (e.g. Mercury-Redstone 3) and satellites in orbit (e.g. Telstar), which explains the difference between your count and theirs.

Ben
Member

Posts: 1843
From: Daytona Beach, FL
Registered: May 2000

posted 09-18-2007 07:50 AM     Click Here to See the Profile for Ben   Click Here to Email Ben     Edit/Delete Message   Reply w/Quote
Well, now you've got me wondering. You are talking about a difference of 1100 launches. There were not that many suborbital missions unless you start talking about failed attempts and ICBM flights; and if they were included, then I notice right away some are missing at the beginning. (Note that they do list 51L).

I wouldn't mind getting a clarification, because knowing just how many successful orbital missions there have been or how many missions reached the 100km height would be nice to have.

While this graph is cool looking, personally I feel it doesn't do much other than give you a sense of how the launch rate has changed. You can't tell what's what, and the circles highlighting certain missions are just randomly placed on the graph.

cspg
Member

Posts: 4046
From: Geneva, Switzerland
Registered: May 2006

posted 09-18-2007 09:40 AM     Click Here to See the Profile for cspg   Click Here to Email cspg     Edit/Delete Message   Reply w/Quote
Ben,

My database might not be 100% accurate (and lots of blanks here and there because it's hard to find information and I've been rather lazy regarding about this database especially regarding the 1957-1980's timeframe; it takes too much time but I have listed the following: Spacecraft, cospar, day, month, year, launch site, pad, launcher, launch vehicle type, satellite type; but again with blanks especially in the satellite type entry) but from what I've looked at, if you add the launch failures and the numerous multiple satellite launches (especially the C(K)osmos series of military satellites launched from Plesetsk using C(K)osmos SL-8/C1 11K65M) I'm sure you can find the 1100 "missing satellites/launches".

Chris.

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