他们把这一发现发表在杂志《地球和行星科学通讯》上。
They report the findings in the journal Earth and Planetary Science Letters.
约翰·格兰特(John Grant)是史密森尼学会的一名行星科学家。
John Grant is a planetary scientist with the Smithsonian Institution.
科学家们在争论一颗小行星是否要撞上地球。
Scientists were debating whether an asteroid was about to hit the Earth.
科学家们认为很久以前在那个行星上可能有水存在。
Scientists think there was probably water on the planet long ago.
它对现行的支持生命的遥远行星研究的科学贡献。
Its science contributes to the ongoing search for distant planets that support life.
科学家说这颗行星与其主恒星的距离适中，可能存在水分。
Scientists say the planet's distance from its primary star means it may contain water.
科学家已经猜测这颗红色的行星上有水。
据《科学》杂志报道，这颗神秘的X行星的运行轨道远在海王星之外。
Science magazine reports that the mysterious "Planet X" moves in a distant orbit beyond Neptune.
我听说科学家正计划研究小行星和陨石，对不对？
I hear that scientists are planning to study asteroids and meteors, right?
直到最近科学家才能确定太阳系中行星的数量。
Not until recently did scientists the number of planets in our solar system.
直到最近科学家才能确定太阳系中行星的数量。
Not until recently did scientists determine the number of planets in our solar system.
一天地球的科学家也会到另一个行星创造生命。
One day scientists from earth will also go to another planet and populate it.
学生：我听说科学家正计划研究小行星和陨石，对不对？
I hear that scientists are planning to study asteroids and meteors, right?
学生：我听说科学家正计划研究小行星和陨石，对不对？
I hear that scientists are planning to study asteroids and meteors, right?
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