Under the control and overall direction of French test pilot André Turcat, the French Concorde "001" prototype had set numerous speed and altitude records.
In London, British astrophysicist John Beckman had been using aircraft to do astronomy for years, despite being a nervous flyer himself.
Closing in at maximum velocity, Concorde would swoop down from the north and intercept the shadow of the moon over northwest Africa.
Two minutes after take-off, the aircraft hit Mach 1, or about 707 mph at altitude, and headed southeast toward the moving shadow.
Planned Concorde eclipse tours in 2001 were grounded, and in 2003 the final commercial Concorde flights touched down for the final time.
Correction: An earlier version of this story incorrectly said the Concorde took off from Tenerife; in fact, it left from Gran Canaria.
An earlier version also incorrectly indicated the speed of Mach 1 at which "001" was traveling after two minutes of ascent. »