SpaceX launch scrubbed; rescheduled for Monday

SpaceX launch scrubbed; rescheduled for Monday

CAPE CANAVERAL, FL (WAFF) - Sunday's expected launch of a SpaceX rocket was scrubbed due to what NASA officials called a "tracking issue."

SpaceX CEO Elon Musk tweeted moments after the scrub announcement that an Air Force tracking radar went down.

The launch, now rescheduled for Monday night, will mark the second attempt of a landing of a SpaceX rocket booster, but even after rectifying what they believe to be the cause of January's explosive try, engineers still have their doubts.

The Jan. 10 experiment, in which SpaceX tried landing a booster on a platform off the Florida coast, ended with a fireball.

Engineers said the explosion was due in part to there not being enough hydraulic fluid.

After the SpaceX rocket sends a weather satellite towards a final destination some 1-million miles away, the booster will try once again to land on the platform back on Earth.

This time, however, company officials are less certain of success - despite rectifying the hydraulic fluid problem. They said Sunday's particular course means the booster will fly back at faster speeds than it did in January.

"So on one side we fixed the problem, on the other side this trajectory is a lot more aggressive and a lot more difficult," SpaceX vice president Hans Koenigsmann said Saturday. He stressed that the test is secondary and entirely separate from the primary mission of launching the Deep Space Climate Observatory for NASA and the National Oceanic and Atmospheric Administration, or NOAA.

The launch of the SpaceX rocket carrying the Deep Space Climate Observatory and the booster's attempted landing will be streamed live online. The launch is set for just after 5 p.m. CT Monday.

Copyright 2015 WAFF. All rights reserved. The AP contributed to this report.