Live coverage: Two satellites lift off aboard Ariane 5

The European Space Agency has cinched an agreement with Arianespace for the October 2018 launch of the James Webb Space Telescope aboard an Ariane 5 rocket, which will dispatch the nearly $10 billion observatory on a bold mission that promises to rewrite astronomy textbooks.

These photos show Monday’s rollout of an Ariane 5 rocket on a 1.7-mile journey to its launch pad at the Guiana Space Center in South America.

A European-built, Turkish-owned spy satellite rocketed into orbit Monday aboard a Vega booster launched from French Guiana, part of a $300 million project to feed improved surveillance imagery to the Turkish military and advance the country’s aerospace manufacturing base.