A stylized illustration of two airplanes narrowly avoiding collision in the sky, with dramatic contrails forming a cross pattern against a blue background

National Near Miss Day is observed annually on March 23, commemorating a significant event in space history when the asteroid 4581 Asclepius narrowly missed colliding with Earth in 1989. This day serves as a reminder of the potential dangers posed by near-Earth objects and encourages reflection on our planet’s vulnerability.

Quick Facts

  • When is it?: March 23
  • Tagged as: National Near Miss Day
  • What’s the hashtag?: #NationalNearMissDay
  • When was it founded?: The observance began in 1989.
  • Who founded it?: The specific founder is not documented, but it arose from the discovery of the asteroid’s close approach.

History of National Near Miss Day

On March 22, 1989, asteroid 4581 Asclepius came within approximately 450,000 miles of Earth. It was not until March 31, nine days later, that astronomers Henry E. Holt and Norman G. Thomas discovered this near miss. Had it collided with Earth, the impact would have released energy equivalent to about 600 megatons of TNT, potentially causing catastrophic damage.

Timeline

  • March 22, 1989: Asclepius passes close to Earth.
  • March 31, 1989: Discovery of the near miss by astronomers.
  • Subsequent years: Increased awareness and monitoring of near-Earth objects.

Dates by Next Year

YearMonth and DateDay
2025March 23Sunday
2026March 23Monday
2027March 23Tuesday
2028March 23Thursday
2029March 23Friday
2030March 23Saturday

Observed

National Near Miss Day is celebrated every year on March 23. It serves as an opportunity for people to reflect on the importance of space awareness and the potential threats from asteroids and other celestial bodies.

Fun Facts About National Near Miss Day

  • The asteroid Asclepius is about 300 meters wide.
  • It was named after Asclepius, the Greek god of medicine.
  • Many asteroids pass close to Earth each year, but most go unnoticed.

Quiz

  1. What year did the near miss occur?
  • Answer: 1989
  1. What is the name of the asteroid that nearly hit Earth?
  • Answer: 4581 Asclepius
  1. How far did Asclepius come to Earth?
  • Answer: Approximately 450,000 miles

FAQs

  • What should I do on National Near Miss Day?
    You can celebrate by learning about asteroids, sharing stories of near misses, or discussing space safety with friends and family.
  • Is National Near Miss Day recognized officially?
    While it is widely acknowledged and celebrated informally, there is no official governmental recognition.

Related

  • Asteroid Awareness Month
  • International Asteroid Day
  • Space Exploration Day