After several delays earlier this week, SpaceX conducted a hold-down test-firing of a Falcon 9 rocket at Cape Canaveral Friday evening in a key test before launch next week on a resupply mission to the International Space Station.

The maiden flight of NASA’s Space Launch System, a heavy-lift human-rated rocket and one of the agency’s core programs, will likely not be ready for takeoff until 2020, officials said recently.

Riding a column of red-hot rocket exhaust, an Indian Polar Satellite Launch Vehicle fired into orbit Wednesday with a replacement satellite for the country’s home-grown navigation network.