A dramatic twilight SpaceX launch freaked out people in LA

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A dramatic twilight SpaceX launch freaked out people in LA

SpaceX launches the SAOCOM 1A satellite for Argentina's Space Agency on October 7 from Vandenberg Air Force Base in California.
Twitter: @elonmusk

It happened again: SpaceX launched a rocket from the coast of California at dusk on Sunday, and the atmospheric conditions created a stunning visual display. Social media lit up in response, as people across Los Angeles took in the rocket's glowing plume, which was visible from hundreds of miles away.

The U.S. Air Force released sonic boom warnings to California residents ahead of the launch, as this was also the first time SpaceX landed its rocket back near the West Coast launch site. On its return a few minutes after launch, the first stage of the Falcon 9 rocket created a sonic boom that could be heard in several California counties.

Despite the advance warnings, Angelenos took to social media to speculate over the glowing cloud that appeared above the city.

LA Mayor Eric Garcetti explained in a tweet that the glow was "definitely not aliens."

"What you're looking at is the first launch and landing of the SpaceX Falcon 9 rocket on the West Coast," Garcetti said.

This phenomenon has happened before. In December, SpaceX launched the Iridium-4 mission just after sunset, which also created a highly visible plume in the sky. That launch caused similar reactions of shock and confusion across LA.

  • A long exposure photo shows the glowing trails of the Falcon 9 rocket, including the first stage returning to land

    SpaceX launches the SAOCOM 1A satellite for Argentina's Space Agency on October 7 from Vandenberg Air Force Base in California.
    SpaceX
  • New SpaceX landing pad in California: LZ-4

    The mission was the debut of SpaceX's new concrete Landing Zone 4 (LZ-4), where the first stage of the rocket – also called the "booster" stage – returned to land.

    SpaceX landing pad LZ-4 at Vandenberg Air Force Base in California.
    SpaceX
  • The SpaceX Falcon 9 rocket's lower stage returns to land at LZ-4

    About eight minutes after launch, the booster stage of the rocket returned to land upright at LZ-4. Previously, SpaceX landed rockets launched from California on an autonomous barge stationed in the Pacific Ocean. This was the 30th time SpaceX landed a rocket and the 17th successful SpaceX mission this year.

    SpaceX launches the SAOCOM 1A satellite for Argentina's Space Agency on October 7 from Vandenberg Air Force Base in California.
    SpaceX
  • SpaceX video gives a real-time look at the liftoff and landing, minutes apart

  • LZ-4 at Vandenberg Air Force Base on the coast of the Pacific Ocean

    SpaceX landing pad LZ-4 at Vandenberg Air Force Base in California.
    SpaceX