When will Mars be closest to Earth in the next 20 years or so?

The distance between Mars and Mars is not static, but variable, the minimum distance between the Earth and Mars is about light years, that is, 100 million kilometers, the maximum is about 400 million kilometers, and the average is about 100 million kilometers, and the close contact between the two occurs about once every 15 years.

Mars is the fourth closest planet to the Sun and the second smallest planet in the Solar System after Mercury, one of the four terrestrial planets in the Solar System. Mars is about half the diameter of the Earth, and its axis of rotation is similar in inclination and rotation period, but its orbital period is twice that of the Earth. The Martian atmosphere, dominated by carbon dioxide, is thin and cold, full of impact craters, canyons, sand dunes and gravel, with no stable liquid water, and the southern hemisphere is ancient, highland full of impact craters, and the northern hemisphere is a younger lowland plain.

I don't know what day you said tonight? du

But Mars does zhi

Every two or so years, it approaches the Earth version.

Once. The last time was on July 27, 2018, and the distance from the Earth was about 57 million kilometers.

The next time is indeed this year, the date is October 13, 2020, and the closest to Earth is about 63 million kilometers. That day has not yet come, and it will be many more months.

The planets are revolving around the sun. Because the planets are at different distances from the sun, their orbital periods are also different, so any two planets will approach each other once at a certain time, which is called the "planetary conjunction period".

Mars and Earth will also approach each other once in a while, and this time is called the conjunction cycle between Mars and Earth. When the orbit of Mars is outside the Earth's orbit and is closest to the Earth, it is called "Mars opposition". This conjunction period can be calculated. The formula is:

1/s=1/e－1/t。where: e is the earth's orbital period, and e = days. t is the orbital period of the planet. s is the period of conjunction between the Earth and the planet.

The orbital period of Mars t=days, and s=days can be found.

That is, Mars and Earth come closer to each other every other day. That's about a little over two years of Earth, so Mars will be close to Earth every two years.

Mars at opposition.

55 million km. Type Mountain

The closest distance the Earth has to Mars is about 55 million kilometers, and the farthest distance is about 400 million kilometers. This is because this distance changes from moment to moment, and the magnitude of the change is quite large, for example, according to Stellarium's simulations, the distance between Mars and Earth is astronomical units.

That is, hundreds of millions of kilometers. On May 1, 2020, the distance between Mars and Earth will be reduced to 100 million kilometers.

Mars is light-years from Earth.

Mars is at its closest distance of 55 million kilometers from the Earth, and its farthest distance is 400 million kilometers.

1 light year = 300,000 * 365 * 24 * 60 * 60 = kilometers.

Distance from Mars to Earth = ( light years.

The fastest speed of the space shuttle is 12,000 kilometers per hour, and it takes more than 6 months to calculate the closest distance between Mars and the Earth, and it takes more than a year to go back and forth.

The closest distance between Mars and Earth is about 55 million kilometers and the farthest distance is more than 400 million kilometers, and the close contact between the two occurs about once every 15 years, and the distance between Mars and Earth reached about 58.8 million kilometers in 1988 and 57.6 million kilometers in 2018.

Martian Surface Geography:

Mars, like Earth, has a variety of terrains, with mountains, plains, and canyons, and Mars is basically a desert planet, with sand dunes and gravel on the surface. Due to factors such as less gravity, the terrain size is also different compared to the Earth.

The topography of the northern and southern hemispheres is striking: the north is a lowland filled with lava, and the south is an ancient highland full of craters, separated by a clear slope; Volcanic terrain is interspersed, numerous canyons are dotted around, the North and South Poles are crowned with dry ice (solid carbon dioxide) and water sparrow ice, and wind-formed sand dunes spread across the planet.

The distance from the Earth to Mars is 55 million kilometers, which is the closest distance, and since both the Earth and Mars are moving, the farthest distance is 400 million kilometers. One light year = 300,000 * 365 * 24 * 60 * 60 = kilometers. Therefore, calculate the Mars to Earth distance = (light years.