More than 70,000 people have signed petitions calling to stop Jeff Bezos from returning to Earth after he blasts into space next month.

Bezos, the founder of the space-exploration firm Blue Origin, said earlier this month that he and his brother, Mark Bezos, would fly into space aboard the company’s New Shepard rocket on July 20 in its first flight carrying people.

Three days after Bezos’ announcement, two petitions were launched to try to prevent the billionaire’s reentry to Earth. Each had garnered thousands of followers in just 10 days.

Bezos plans to take an 11-minute flight to the edge of space in New Shepard alongside his brother and an unnamed auction winner who paid $28 million for a seat. They’ll be strapped into a dome-shaped capsule, which sits on top of the rocket booster.

If you wish to sign the petition you can find it at Change.org petition titled “Do not allow Jeff Bezos to return to Earth.”