Commercial Space

BulgariaSat-1 Blazes to Orbit on Used SpaceX Falcon 9 Rocket as Breakthrough Booster Lands 2nd Time on Oceanic Platform

Blastoff of 2nd flight-proven SpaceX Falcon 9 with 1st geostationary communications for Bulgaria at 3:10 p.m. EDT on June 23, 2017, carrying BulgariaSat-1 to orbit from Launch Complex 39A at NASA’s Kennedy Space Center in Florida. Credit: Ken Kremer/

KENNEDY SPACE CENTER, FL – In another breakthrough milestone aimed at slashing the high cost of rocketry, the innovators at billionaire entrepreneur Elon Musk’s SpaceX successfully launched a ‘used’ rocket for only the second time in history – that blazed a path to orbit with its BulgariaSat-1 commercial television comsat payload Friday afternoon, June 23, from the Kennedy Space Center and just minutes later landed upright and intact on an oceanic platform waiting offshore in the vast currents of the Atlantic ocean.

“This is really a great day for us,” Maxim Zayakov, CEO of BulgariaSat and Bulsatcom told Universe Today during pre and post launch interview’s onsite at NASA’s Kennedy Space Center in Florida.

“Everything is seeming to be a good success so far.”

To top that, SpaceX is targeting a bicoastal weekend doubleheader of launches signaling a remarkably rapid turnaround capability. Another Falcon 9 is scheduled for blastoff on Sunday, June 25 at 1:25 p.m. PDT (4:25 p.m. EDT; 2025 UTC) from Vandenberg Air Force Base in California on the Iridium-2 mission, less than 48 hours apart – which would set a new launch turnaround record for SpaceX.

The picture perfect liftoff of the BulgariaSat-1 communications satellite for East European commercial broadband provider BulgariaSat began at 3:10 p.m. EDT, or 19:10 UTC, June 23, with ignition of all nine of the ‘flight-proven’ Falcon 9 first stage engines on SpaceX’s seaside Launch Complex 39A at NASA’s Kennedy Space Center in Florida.

Launch 2nd recycled SpaceX Falcon 9 with 1st geostationary communications for Bulgaria at 3:10 p.m. EDT on June 23, 2017, carrying BulgariaSat-1 to orbit from Launch Complex 39A at NASA’s Kennedy Space Center in Florida – as seen from the countdown clock. Credit: Ken Kremer/

BulgariaSat is an affiliate of Bulsatcom, Bulgaria’s largest digital television provider.

“Everything went down just as we expected,” BulgariaSat CEO Zayakov told me. “Of course there was a lot of excitement. And there are a lot of excited and scared feelings [with launches].”

“At the end of the day it not only worked out just as expected with the launch but the satellite also already reported in telemetry that she is doing fine,” Zayakov elaborated.

BulgariaSat-1 is the first geostationary communications satellite orbited for the nation of Bulgaria.

“We will start using it as soon as we can, in about one and a half months.”

Liftoff of used SpaceX Falcon 9 at 3:10 p.m. EDT on June 23, 2017 delivering BulgariaSat-1 to orbit from Launch Complex 39A at NASA’s Kennedy Space Center in Florida. Credit: Julian Leek

The used 229-foot-tall (70-meter) SpaceX Falcon 9 carrying BulgariaSat-1 soared off historic pad 39A into brilliant mid-afternoon blue skies drenching the Florida Space Coast with beloved sunshine to the delight of hordes of spectators gathered from across the globe – including a Bulgarian TV crew witnessing their first launch.

History’s first ‘flight-proven’ Falcon 9 booster was successfully launched by SpaceX this past March for Luxembourg based telecommunications giant SES on the SES-10 mission – likewise from pad 39A.

Some 35 minutes after blastoff, BulgariaSat-1 was successfully separated as planned from the Falcon 9 second stage and deployed to its targeted initial geostationary transfer orbit (GTO).

“So now she is on her way to the orbital position. The solar arrays deployed about 30 minutes after spacecraft separation from the second stage.”

Blastoff of 2nd flight-proven SpaceX Falcon 9 with 1st geostationary communications for Bulgaria at 3:10 p.m. EDT on June 23, 2017, carrying BulgariaSat-1 to orbit from Launch Complex 39A at NASA’s Kennedy Space Center in Florida- as seen from the crawlerway. Credit: Ken Kremer/

Would you launch with Space X again?

“Yes looking to the future we would be happy to use SpaceX again in the future, certainly why not. SpaceX is definitely up there,” Zayakov replied.

BulgariaSat-1 will be located at the Bulgarian orbital position at 1.9 degrees East longitude and will provide reliable satellite communications solutions to broadcast, telecom, corporate and government customers.

How many customers will be served? I asked Zayakov.

“BulgariaSat-1 will serve about 800,000 customers in Bulgaria and about another million subscribers elsewhere in eastern Europe and the Balkans,” Zayakov elaborated.

The BulgariaSat-1 geostationary comsat will provide direct-to-home television (DTH) and data communications services to Southeastern Europe, including Serbia, the Balkans and other European regions.

You could not have asked for better weather as the recycled Falcon 9 roared to life for the second time with a paying customer and put on a long and exciting space spectacle for those lucky and fortunate enough to witness history with their own eyeballs first hand and follow along for several minutes as the rocket accelerated magnificently to orbit and arched over to the African continent in the nearly cloudless sky.

Falcon 9’s first stage for the BulgariaSat-1 mission previously supported the Iridium-1 mission from Vandenberg Air Force Base in January of this year.

Some two minutes and 40 seconds after liftoff the first and second stages separated.

As the second stage continued to orbit, the recycled first stage began the daunting trip back to Earth on a very high energy trajectory that tested the limits of the boosters landing capability.

“Falcon 9 will experience its highest ever reentry force and heat in today’s launch. Good chance rocket booster doesn’t make it back,” SpaceX founder and CEO Elon Musk wrote in a prelaunch tweet.

Following stage separation, Falcon 9’s first stage carried out two burns, the entry burn and the landing burn using a trio of the Merlin 1D engines.

Ultimately the 15 story tall booster successfully landed on the “Of Course I Still Love You” or OCISLY droneship, stationed in the Atlantic Ocean about 400 miles (600 km) offshore and east of Cape Canaveral.

“Rocket is extra toasty and hit the deck hard (used almost all of the emergency crush core), but otherwise good,” Musk tweeted shortly after the recycled booster successfully launched and landed for its second time.

The 156 foot tall first stage may have touched down with a slight tilt.

The OCISLY droneship is expected back into Port Canaveral in a few days.

The 8,100 pounds (3,700 kilograms) BulgariaSat-1 satellite was built by SSL in Palo Alto, Calif. It has a design lifetime for a 15-year mission.

BulgariaSat-1 is equipped with 2 Ku-band FSS transponders and 30 Ku-band BSS transponders for fixed satellite services and advanced television services such as high definition television.

With BulgariaSat-1 now safely in orbit, a period of critical testing and checkout is on tap next.

“It takes about ten days to arrive and stabilize at the final orbital slot,” Zayakov stated. “Then after those 10 days it takes about another 20 to 30 days to actually do all the orbital checkouts and orbital tests required to make sure that the satellite is performing fine and that we can start using it for broadcasts.”

“So in about one and a half months we will be ready to start using BulgariaSat-1.”

“We will start using it as soon as we can!”

2 enthusiastic ‘Thumbs Up’ from Maxim Zayakov, CEO of BulgariaSat, during interview with Universe Today at KSC countdown clock following June 23, 2017 launch of BulgariaSat-1 from Launch Complex 39A at NASA’s Kennedy Space Center in Florida. Credit: Ken Kremer/

The BulgariaSat-1 launch had originally been slated for this past Monday, June 19 but was delayed four days to fix a valve in the payload fairing.

“Postponing launch to replace fairing pneumatic valve,” Musk tweeted last Sunday. “It is dual redundant, but not worth taking a chance.”

And everything went off without a hitch!

BulgariaSat-1 counts as the eighth SpaceX launch of 2017.

Payload fairing encapsulating BulgariaSat-1 comsat launching atop used SpaceX Falcon 9 booster at Launch Complex 39A at NASA’s Kennedy Space Center in Florida. Credit: Ken Kremer/

Watch for Ken’s onsite BulgariaSat-1 mission reports direct from the Kennedy Space Center and Cape Canaveral Air Force Station, Florida.

Stay tuned here for Ken’s continuing Earth and Planetary science and human spaceflight news.

Ken Kremer

Photo of BulgariaSat-1 undergoing launch processing. Credit: SpaceX
SpaceX Falcon 9 BulgariaSat-1 mission patch logo. Credit: SpaceX/BulgariaSat
Ken Kremer

Dr. Ken Kremer is a speaker, research scientist, freelance science journalist (KSC area,FL) and photographer whose articles, space exploration images and Mars mosaics have appeared in magazines, books, websites and calendars including Astronomy Picture of the Day, NBC, FOX, BBC,, Spaceflight Now, Science and the covers of Aviation Week & Space Technology, Spaceflight and the Explorers Club magazines. Ken has presented at numerous educational institutions, civic & religious organizations, museums and astronomy clubs. Ken has reported first hand from the Kennedy Space Center, Cape Canaveral, NASA Wallops, NASA Michoud/Stennis/Langley and on over 80 launches including 8 shuttle launches. He lectures on both Human and Robotic spaceflight - Follow Ken on Facebook and Twitter

Recent Posts

A New Mission Will Search for Habitable Planets at Alpha Centauri

The TOLIMAN space telescope will search for exoplanets next door, and has contracted with EnduroSat…

2 hours ago

Machine Learning Finds 140,000 Future Star Forming Regions in the Milky Way

Our galaxy is still actively making stars. We've known that for a while, but sometimes…

9 hours ago

If Titan Has the Chemistry For Life, Dragonfly Could Find it

The highly-anticipated Dragonfly robotic rotocraft mission to Saturn's moon Titan is scheduled to launch in…

10 hours ago

JWST Sees Organic Molecules Swirling Around a Newborn Star

One of the most interesting questions we can ask is, "How did life form?". To…

20 hours ago

The Favorite Solar System Moons of Planetary Geologists; An In-Depth Discussion

The moons of our Solar System have garnered quite a lot of attention in the…

21 hours ago

Remnants of a Relict Glacier Found Near the Equator on Mars

New results presented at the 54th Lunar and Planetary Science Conference could change our approach…

1 day ago