Earth view MOSCOW, Jan 2 The most dangerous asteroid Apophis with a diameter of almost 400 meters and a weight of about 30 tons in the spring of 2029 will fly very close to the Earth — at the distance at which geostationary satellites are placed in orbit, VNII GOChS (part of the Ministry of Emergency Situations) warned. According to the forecast available to RIA Novosti , this will happen a day after Cosmonautics Day — April 13, 2029. According to experts, the energy released in a possible collision of an asteroid with the Earth will amount to 1,717 megatons. This is 30 times more energy released during the explosion of the most powerful Soviet thermonuclear bomb in the world, tested in 1961.
& # 34; The strength of an earthquake within a radius of 10 kilometers from the site of the fall can reach 6.5 points on the Richter scale, the wind speed will be at least 790 meters per second & # 34; — says the forecast of VNII GOChS.
Large space objects include asteroids, which are more than a kilometer in diameter. About 120 very large asteroid craters are known on Earth, in Russia the largest of them is the Popigai depression in the north of the Siberian platform. The dimensions of the inner crater are 75 kilometers, the outer one is 100 kilometers; the catastrophe occurred about 36 million years ago. 
250 million years ago). Another meteorite, according to the hypothesis of Luis Alvarez, led to the extinction of dinosaurs. Comparatively smaller objects also pose a serious threat to the Earth, since their explosions near settlements as a result of shock waves and heat can lead to significant destruction, commensurate with the damage from an atomic explosion. It was only by chance that a fall into an unpopulated area of the Tunguska meteoroid in 1908 did not cause such consequences. «An asteroid diameter of about one or two kilometers is a threshold for a global catastrophe. The completeness of information about such asteroids is estimated at less than 80%,» the former head of RIA Novosti told RIA Novosti. Center «Antistikha» Vladislav Bolov. 
Two asteroids are flying to Earth at once