Skip to main content

A TV satellite is about to explode following 'irreversible' battery damage

A Boeing satellite orbits the Earth. In February, a similar satellite named Spaceway-1 will likely explode as soon as its batteries kick on.
A Boeing satellite orbits the Earth. In February, a similar satellite named Spaceway-1 will likely explode as soon as its batteries kick on.
(Image: © Boeing)

Following an unexplained accident, a satellite built by Boeing and operated by DirecTV is at risk of exploding in the coming weeks. To mitigate potential damage to other satellites, the U.S. government will allow the satellite TV provider to move the doomed craft to a higher orbit ahead of schedule.

The satellite, called Spaceway-1, has been orbiting some 22,000 miles (35,400 kilometers) above Earth since 2005, providing high-definition television coverage for many years before being demoted to a backup satellite. (Currently, it is not providing any coverage for customers.) 

In December 2019, the craft experienced a "major anomaly" that resulted in "irreversible thermal damage" to its batteries, DirecTV officials wrote last week in a filing to the U.S. Federal Communications Commission (FCC). While Spaceway-1 has relied on its solar panels for power in recent months, the craft will soon enter its "eclipse season" — a period when the satellite hovers in Earth's shadow — and the batteries must be activated. When this season begins on Feb. 25, company representatives wrote, the damaged batteries will likely explode upon activation, destroying the satellite and putting other nearby satellites at risk. 

Related: The Top 10 Greatest Explosions Ever

The satellite follows a geostationary orbit (meaning it appears to stay put over one particular part of Earth as it rotates), which is the highest orbit possible for in-use satellites. Because of the craft's high location, redirecting the craft downward — where other in-use satellites are circling — so that it may eventually burn up in the atmosphere is not a viable option. Instead, on Jan. 19, DirecTV requested that the FCC allow the company to relocate the satellite to a higher orbit known as the "graveyard orbit," roughly 185 miles (300 km) above its current path, where, hopefully, Spaceway-1 can explode in peace.

Normally, decommissioning a satellite involves releasing all of the satellite's remaining propellant — a process that can take months, depending on how much fuel is left in the tank. Spaceway-1 doesn't have months to spare; according to the FCC filing, there's only enough time to release a "nominal" amount of the satellite's remaining fuel if the craft is to be moved to that great graveyard in the sky before exploding.

The FCC approved DirecTV's request to decommission Spaceway-1 ahead of schedule and gave the company a waiver to ignore the propellant-depletion rule. According to AT&T, the parent company of DirecTV, the soon-to-explode satellite "is a backup and we do not anticipate any impacts on consumer service as we retire it." 

RIP, Spaceway-1. May your broken body rust in peace in the quiet of space.

Originally published on Live Science.

How It Works Banner

Want more science? Get a subscription of our sister publication "How It Works" magazine, for the latest amazing science news.  (Image credit: Future plc)

Join our Space Forums to keep talking space on the latest missions, night sky and more! And if you have a news tip, correction or comment, let us know at: community@space.com.

  • Gonefishing
    I think it would be very interesting to see it blow-up and what happens to the parts expelled off of the satellite. It sure would be a lot more interesting than anything that satellite beamed down to earth during it's lifetime. Coming up with a way to have clear video coverage of this event would be the challenge. There is only 1 month until this happens. I hope someone can some up with a way to do it.
    Reply
  • sailbum
    Why don't they just use all the remaining propellant to send the satellite off into space, away from any earth orbit? This would completely eliminate the possibility of any debris from an explosion damaging other satellites. Even with moving it to a higher orbit there is still the possibility, however remote, that a piece of debris could eventually drift into a lower orbit and become a threat to operational satellites.
    Reply
  • T.T.Maxx
    Gonefishing said:
    I think it would be very interesting to see it blow-up and what happens to the parts expelled off of the satellite. It sure would be a lot more interesting than anything that satellite beamed down to earth during it's lifetime. Coming up with a way to have clear video coverage of this event would be the challenge. There is only 1 month until this happens. I hope someone can some up with a way to do it.
    I am pretty sure SpaceX could accommodate such a request if asked as they have a supply of flight ready boosters and they are not adverse to filming things like other launchers.
    Reply