美國宇航局發(fā)現(xiàn)了一顆可能存在液態(tài)水的系外行星

NASA discovers new exoplanet that could support liquid water

美國宇航局發(fā)現(xiàn)了一顆可能存在液態(tài)水的系外行星

A group of scientists used reanalyzed data from NASA’s Kepler space telescope to discover an Earth-size exoplanet orbiting in its star’s habitable zone.

一組科學(xué)家利用美國宇航局開普勒太空望遠(yuǎn)鏡重新分析的數(shù)據(jù)，發(fā)現(xiàn)了一顆地球大小的系外行星，該行星在其恒星的宜居帶內(nèi)繞行。

For the space agency’s purposes, habitable zone means the area around a star where a planet could support liquid water — and, potentially, other forms of life.

對于美國宇航局來說，宜居帶是指在一顆恒星周圍的區(qū)域，在那里一顆行星可能存在液態(tài)水，也可能存在其他形式的生命。

This artist’s illustration shows what Kepler-1649c could look like from its surface.

這幅藝術(shù)家的插畫展示了Kepler-1649c表面的樣子。

The planet was found when scientists examined older observations from Kepler, which was retired by the agency in 2018.

這顆行星是在科學(xué)家研究開普勒望遠(yuǎn)鏡的舊觀測數(shù)據(jù)時(shí)發(fā)現(xiàn)的，開普勒望遠(yuǎn)鏡于2018年退役。

“While previous searches with a computer algorithm misidentified it, researchers reviewing Kepler data took a second look at the signature and recognized it as a planet,” the space agency said.

“雖然之前用計(jì)算機(jī)算法進(jìn)行的搜索錯誤地識別了它，但研究人員在審查開普勒數(shù)據(jù)后，重新審視了這個信號，并將其識別為一顆行星。”航天局說。

According to NASA, this distant world located 300 light-years from Earth is most similar to our home planet in size and estimated temperature.

根據(jù)美國宇航局的說法，這個距離地球300光年的遙遠(yuǎn)星球在大小和估計(jì)的溫度上與我們的母星最為相似。