Cristiano Ronaldo faces NASA engineer’s robot goalkeeper in penalty challenge

By Hoài Anh   December 1, 2025 | 01:19 am PT
Billionaire footballer Cristiano Ronaldo took on a unique penalty challenge, attempting to score against a robot goalkeeper created by former NASA engineer Mark Rober, which is claimed to be “unbeatable.”

Rober, an American engineer and YouTube personality, is known for his large-scale engineering projects and creative science videos. Before becoming a full-time content creator, Rober worked at NASA’s Jet Propulsion Laboratory for seven years, contributing to the Curiosity rover mission.

Rober’s latest project aimed to create a robot capable of facing Ronaldo in a penalty shootout. The video documenting the challenge went viral, garnering over 13 million views and nearly 10,000 comments within a day.

The goal was to design a machine that could stop shots travelling at speeds up to 80 miles per hour (128 km/h), giving the robot just 250 milliseconds to react. To achieve this, Rober's team developed a high-speed tracking system using 22 infrared cameras. These cameras, along with reflective stickers on the ball, enabled the system to predict the ball’s 3D trajectory at a rate of 500 calculations per second, just 6 milliseconds after the ball left the kicker’s foot.

Ronaldo và cựu kỹ sư NASA Mark Rober (phải). Ảnh: Mark Rober

Cristinao Ronaldo (left) and former NASA engineer Mark Rober. Photo courtesy of Mark Rober

The robot's goalkeeper frame is mounted on a horizontal drive system powered by two 50-horsepower motors. This allows the robot to accelerate to 66 km/h almost instantly, positioning itself precisely in the path of the ball. To ensure swift reactions, Rober’s team used a 5G network with signal latency under 10 milliseconds.

While the robot blocked several powerful shots during testing, it experienced durability issues, with the force from some shots damaging its structure. To address this, Rober applied aerospace engineering techniques, incorporating carbon fiber and thick foam to create a lightweight yet durable shield. He also reinforced attachment points to prevent damage during high-speed movements.

Later tests showed that the robot was nearly unbeatable, proving that the combination of speed, sensor accuracy, and physical durability made it ready for the ultimate challenge.

Cristiano Ronaldo faces Mark Rober's robot in a penalty challenge. Video from Mark Rober/YouTube

The final test took place in Portugal, where Ronaldo faced the robot in a penalty shootout. Early on, the robot blocked several of Ronaldo’s powerful shots, leaving the former Real Madrid striker in awe. Realizing that brute force would not be enough, Ronaldo adjusted his approach, aiming to find weaknesses in the system. Ultimately, he succeeded with a finessed shot that placed the ball into the side netting.

Rober attributed the robot’s eventual failure to an unexpected mechanical flaw. During transport to Portugal, one of the robot's transport rails bent slightly, causing instability when the robot had to move fully to the right. Ronaldo exploited this flaw to score.

Despite the robot’s loss, Ronaldo praised it, calling it one of the toughest opponents he had ever faced.

On Oct. 8, Ronaldo became the first footballer to reach billionaire status, with the Bloomberg Billionaires Index estimating his net worth at US$1.4 billion.

 
 
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