Halley's Comet comes round once every eighty years.とは 意味・読み方・使い方

Halley's Comet comes round once every eighty years.

the comet that Halley predicted could be seen from earth about every 76 years

The star is located 20 light years away from Earth in the constellation Libra.

On Aug. 27, Mars made its closest approach to Earth in almost 60,000 years.

The Crab Nebula is about 7,200 light years from Earth.

It will go into orbit around Venus this December.

It was the first time in 25 years for an annular eclipse to be observed in Japan.

At that time, Mars will be only 57.59 million kilometers away from Earth and even brighter than it was this year.

At the time of their birth 4.6 billion years ago, Venus and Earth were like sister planets.

The planet, Kepler-78b, is in the constellation Cygnus about 400 light years away from Earth.

Since its discovery 76 years ago, Pluto was considered to be the ninth planet.

When Earth passes by Mars about every 780 days, the two planets are much closer.

Stalagmites grow slowly over hundreds of years.

Mars and Earth come close to each other about every two years and two months.

This star is located at a distance of roughly 100 parsecs from the earth.

The Magellanic Clouds are about 200,000 light‐years away from our galactic system.

They orbit a star called Gliese 667C.

a unit of distance used in astronomy, called light-year

The origins of Halloween go back to an ancient Celtic festival.

supergiant star 650 light years from Earth

This summer, Mars made its closest approach to Earth in a very long time.

Neptune is the eighth planet of the solar system.

Neptune is the eighth planet of the solar system.

A bad wife is the shipwreck of her husband.

Greek mathematician and astronomer who estimated the circumference of the earth and the distances to the Moon and sun (276-194 BC)

double star 15.7 light years from Earth

Mars has an elliptical orbit of 687 days.

Pluto has an elliptic orbit.

Kepler-78b orbits around its sun every eight and a half hours.

This star is about 400 light-years away from the earth.