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A spaceship crash, near apocalypse, and six other major miscalculations and mistakes

You’ll be making sure your i’s are dotted and your t’s crossed after this.

MISCALCULATIONS AND MISCOMMUNICATION can lead to some horrible results — especially in the field of science.

These eight classic examples may make you laugh, cry, or just shake your head in disbelief.

A simple problem with a measurement conversion, or a misunderstood word can stand in the way of a successful mission. Here are some historical examples where a small misstep changed everything.

Failure to convert to the metric system caused the NASA Mars Climate Orbiter to disintegrate.

The Mars Climate Orbiter launched in 1998 to study Martian climate and atmosphere composition. However, the NASA team on the ground lost the communication signal with the craft soon after it launched.

The problem was that the computer software on the ground was using the standard system of pound-seconds, while the actual spacecraft was using the metric system of Newton-seconds.

The spacecraft entered the Martian atmosphere too low and disintegrated.

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The Mars Climate Orbiter. (Image Credit: NASA)

The plane crash in the Canary Islands that killed 583 people in 1977 happened because of miscommunication between the pilot and air traffic control.

Two Boeing 747 planes crashed on the runway of Los Rodeos Airport, killing 583 people, all because of a simple miscommunication between the pilots.

The fog was so thick that day that neither aircraft could see the other. A misunderstanding between the captain of the KLM plane and the air traffic control tower led the KLM captain to believe he had clearance to take off.

The KLM plane crashed into the Pan Am flight that was still sitting on the runway.

The 2012 Mayan Apocalypse was just a miscalculation of the date.

The misinterpretation and resulting miscommunication of the Mayan calendar convinced quite a few people the world would end in December 2012.

The explanation for this seems to be that the date actually marked the end of a completely regular year on the Mayan calendar, and just signalled the start of a new year — it’s the equivalent of our December 31st.

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A Mayan calender. (Image Credit: Shutterstock)

Sir William Thomson was off by about 4.5 billion years when he estimated the age of the Earth.

In the 1800s he was the first person to use geology and physics to try and calculate the age of the Earth.

Thomson used the heating and cooling of Earth to predict its age and ultimately decided it must be between 20 and 40 million years old. The actual age is about 4.5 billion years. The problem was that Thomson assumed that conditions were stable on Earth as soon as it started cooling off from its molten birth.

The actual temperature history of Earth is far more complicated. While Thomson gravely underestimated Earth’s age, the ideas behind his calculations were a breakthrough, and definitely an improvement from previous estimates that put Earth at only a few thousand years old.

Columbus made some serious distance miscalculations that almost killed him and his crew.

Columbus actually made a whole series of calculation mistakes. First, he underestimated the actual distance one degree of latitude represented on a map.

Second, he thought he was getting this underestimated measure in Roman miles, but they were actually given to him in the much larger Arabic mile. Third, he placed Japan about 8,000 miles closer than it actually was.

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(Image Credit: Wikimedia Commons)

The media reported that 12 people in a mining accident were all found alive when actually 11 of them were dead.

Needless to say, the family members and friends of these 12 men were sent on an emotional rollercoaster. They celebrated for almost three hours before the mistake was corrected. It seems the miscommunication happened because the person relaying the information was down in the collapsed mine shaft wearing a mask that made it difficult to understand the person’s speech.

Miscommunication about what type of cold medicine to take left an 8-year-old with severe brain damage.

MacKenzie Briant underwent a heart transplant shortly after she was born, so there were certain medications she would need to avoid the rest of her life to avoid any health complications.

Briant caught a cold when she was 8 years old, and her current doctor consulted her transplant cardiologist on what prescriptions would be okay for Briant to take. Either the two doctors miscommunicated or the doctor who gave Briant’s mother the list of approved drugs forgot to take Afrin off the list.

Briant used Afrin and now can no longer swallow, speak, or walk. The miscommunication about the drug left her permanently brain damaged.

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Afrin nasal spray. (Image Credit: Wikimedia Commons)

Even Einstein held fast to a mistaken idea — and had to make up a constant in his theory of general relativity to account for it.

He used what is called the cosmological constant in many of his equations to account for his mistaken idea that the universe was stable — not shrinking or expanding.

Eventually, it was discovered that the universe is expanding, and Einstein removed the constant from his equations. But, it turns out the universe is expanding and at a rate that is constantly increasing, so some version of a cosmological constant is needed, and scientists have been reintroducing the constant into Einstein’s general relativity equations.

- Kelly Dickerson

Read: ‘Fear of maths’ affecting careers and the economy >

More: If you can solve this maths sum, a Texas banker will give you one million dollars >

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