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Asteroids: Should we care?

[ad_1] NASA warns that the planet is vulnerable to asteroid impacts and that humanity is not doing enough to defend itself. A single asteroid could destroy an entire US state. NASA is asking for more international assistance in creating a system to track and characterize space objects. Sci-fi movies love to scare audiences with scary […]

How often do big asteroids hit Earth?

[ad_1] Around 50,000 tons of debris enter Earth’s atmosphere each year, but most disintegrate before impact. NASA predicts a large asteroid impact every 100 years, with most being small and causing no damage. The largest asteroid is Ceres, and asteroids may be leftover material from the solar system’s formation. 10 spacecraft have orbited or landed […]

How many risky asteroids exist?

[ad_1] NASA warns of 4,700 potentially hazardous asteroids (PHAs) in Earth’s solar system that could cause serious damage if they collide with the planet. Only 20-30% of PHAs have been located. No one has been killed by an impact event, but PHAs could jeopardize space missions. According to the US National Aeronautics and Space Administration […]

What’s in asteroids and comets?

[ad_1] Asteroids are classified into three categories: C-type, S-type, and L-type/X-type. The asteroid belt between Mars and Jupiter contains more densities of asteroids than anywhere else in the solar system. Comets are made of organic compounds and reflect only 3-5% of incoming light. The high carbon content of asteroids and comets could be useful for […]