Show caption Rocket Lab founder and CEO Peter Beck is pictured with the Humanity Star in Auckland. Photograph: Rocket Lab/AP New Zealand ‘Space graffiti’: astronomers angry over launch of fake star into sky Giant disco ball dubbed ‘Humanity Star’, launched by startup Rocket Lab, will interfere with scientific study of the universe, experts say Michael McGowan @mmcgowan Fri 26 Jan 2018 06.03 GMT Share on Facebook

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Astronomers across the world have criticised a privately owned, New Zealand-based space company after it secretively put a satellite likened to a giant disco ball into orbit.

Last week the space exploration startup Rocket Lab launched a rocket from a remote sheep and cattle farm on the Mahia Peninsula in New Zealand.

The moment prompted jubilation and pride across New Zealand, with Rocket Lab’s founder and chief executive Peter Beck labelling it an “almost unprecedented” step in commercial space exploration.

But it has since emerged that as well as conventional satellites, the rocket was also carrying the “Humanity Star”, a three-foot-wide geodesic sphere made from carbon fibre and fitted with 65 highly reflective panels.

The sphere, the company has claimed, will reflect the sun’s rays back to Earth creating a flashing light visible from anywhere on the globe. It is expected to become the brightest object in the night sky for nine months until it re-enters Earth’s atmosphere.

Rocket Lab said the Humanity Star was supposed to be a “reminder to all on Earth about our fragile place in the universe”, and the company’s chief executive and founder, Peter Beck, said the sphere would “create a shared experience for everyone on the planet”.

But many astrophysicists disagree. Richard Easther from the University of Auckland told the Guardian that Rocket Lab may have unintentionally hit on a particularly sore point for his profession.

Light pollution is already a serious concern for scientists whose focus is on the stars, and the introduction of a glinting disco ball in space has not been widely welcomed.

“This one instance won’t be a big deal but the idea of it becoming commonplace, especially at larger scales, would bring astronomers out into the street,” Easther said.

“I can understand the exuberance for this sort of thing but I also get the sense that they did not realise that people could see a downside to it.”

Others were less diplomatic.

“Wow. Intentionally bright long-term space graffiti. Thanks a lot @RocketLab,” California Institute of Technology astronomer Mike Brown wrote on Twitter.

Or, as the director of astrobiology at Columbia University Caleb Scharf wrote in Scientific American, the star represented “another invasion of my personal universe, another flashing item asking for eyeballs”.



“Most of us would not think it cute if I stuck a big flashing strobe-light on a polar bear, or emblazoned my company slogan across the perilous upper reaches of Everest,” Scharf wrote.