WASHINGTON, June 23 (Xinhua) -- U.S. space firm SpaceX on Friday launched Bulgaria's first geostationary communications satellite into space with its second partly reused rocket.
The BulgariaSat-1 satellite took off on a Falcon 9 rocket from Launch Complex 39A at Kennedy Space Center in Florida at 3:10 p.m. EDT (1910 GMT), a live webcast showed.
Roughly eight minutes after launch, the rocket's first stage completed a vertical landing on the "Of Course I Still Love You" droneship stationed in the Atlantic Ocean.
A SpaceX official called it the "most challenging landing to date."
The rocket's first stage for the BulgariaSat-1 mission previously supported the Iridium-1 mission from Vandenberg Air Force Base in California in January of this year.
It was the second time SpaceX has used a flight-proven first stage on a mission.
On March 30, the California-based company launched a satellite for Luxembourg-based satellite operator SES, using a Falcon 9 first stage that first flew on a cargo resupply mission for the U.S. space agency NASA in April 2016.
That's part of an ongoing effort by SpaceX to bring down spaceflight costs.
"The reusable rocket is a breakthrough in space technology that makes it possible for smaller countries and companies to launch their own satellites," Maxim Zayakov, CEO of BulgariaSat, said in a statement in May.
BulgariaSat-1 is the first geostationary communications satellite in Bulgaria's history.
It will be positioned into orbit at 36,000 kilometers above the Earth, providing television and communication services covering the Balkans and other European regions for at least 15 years.
