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Apophis asteroid will not hit Earth for 100 years

People on Earth can breathe a sigh of relief after NASA confirmed that the Earth will not be threatened by once-frightening asteroids for at least the next 100 years.

After NASA discovered Apophis in 2004, it considered it to be one of the most dangerous asteroids to the earth.

It was expected to come to an end in 2029 and 2036, but was later excluded. There is still a slight threat in 2068.

But now NASA has dismissed the threat based on a new analysis of the asteroid.

The impact in 2068 is no longer possible. Our calculations show that there will be no impact risk for at least the next 100 years.

Apophis is named after the ancient Egyptian god of chaos and darkness and is estimated to be 340m (1,100 feet) wide-about the length of three English football fields.

The asteroid recently flew over the Earth within a range of 17 million kilometers (10 million miles) from the Earth on March 5.

Astronomers can use radar observations to refine their estimates of the asteroid's orbit around the sun, allowing them to confidently rule out any risk of impact in 2068 and beyond.

Seeing it removed from the risk list, there is a certain sense of satisfaction. Look forward to the science we might discover when we approach it in 2029.

Unprecedented close-up

It will happen close to April 13, 2029. On that day, the asteroid is expected to pass within 32,000 kilometers of the Earth’s surface.

This is about one-tenth of the distance between the earth and the moon.

During that close approach in 2029, Apophis will be visible to ground observers in the eastern hemisphere of the earth (including parts of Asia, Africa, and Europe).

Unlike NASA’s March 5 observations, no telescopes or binoculars are required.N

Nevertheless even on that occasion, the radar image of the asteroid has an extraordinary resolution.

If we have binoculars as powerful as this radar, we can sit in Los Angeles and read the dinner menu at a restaurant in New York.

Three potentially dangerous asteroids

NASA tracks asteroids that may one day threaten the approach to Earth and designates them as Potentially Hazardous Asteroids (PHA).

They all have code names suitable for the robots in the Star Wars movie series. Here are three.

1950 DA

The asteroid 1950 DA was discovered on February 23, 1950, and then disappeared from view. It was finally rediscovered half a century later, enabling scientists to perform new calculations on the 1.3-kilometer asteroid to determine the year 2880. There is a possibility that March 16 may be close to the earth, but the chance of direct impact is very long. NASA stated that the probability of Earth impact is 0.012%

2010 RF12

2010, RF12 ranked first on the NASA watch list in terms of the probability of impact on the Earth. This asteroid has a 4.7% probability of impact, with an estimated diameter of 7 million. NASA predicts that the first potential impact may occur in 2095. It sounds more terrifying on September 5th, though. Scientists say that because this asteroid is relatively small, it will not pose a major threat to the Earth.

2012 HG2

The first potential Earth impact of this asteroid may occur on February 12, 2052. NASA predicts that the diameter is about 14m. The 2012 HG2 is the largest number of potential Earth impacts on NASA’s watch list. The planet is relatively small, and it may be in the Earth’s atmosphere.