The spectra show that the stars must have swallowed such planets during their expansive, red-giant stage.
光谱显示，这些恒星在膨胀的红巨星阶段肯定曾经吞没过这些行星。
These major arms have the greatest densities of both young, bright stars and older, so-called red-giant stars.
这些主要臂上有最大密度的年幼明亮恒星和较老的红巨星。
These people were hunters and the site contains remains of the bones of a variety of animals, including elephant, rhinoceros, red deer, ibex, and giant ox.
这些人显然是猎人，遗址里有各种动物的骨头残骸，包括大象、犀牛、马鹿、野山羊和巨大的公牛。
For the first thirty miles the red earth road wound its way through the lowland forest, the giant trees standing in solid ranks alongside and their branches entwined in an archway of leaves above us.
在最初的三十英里里，红土路蜿蜒穿过低地森林，高大的树木整齐地排列在我们的两旁，它们的枝桠在我们头顶上交错成一个树叶拱门。
At this stage, the star becomes a large red giant.
在此阶段，这个恒星变成了巨大的红巨星。
Does a red giant wake up one morning and suddenly just decide to go supernova?
红巨星难道是在某天早晨醒来后忽然决定进行超新星爆发？
After that it is expected to become a red giant, as the hydrogen that presently comprises it is exhausted and the sun switches to burning helium instead.
之后，据推测太阳会成变成一颗红巨星，因为到那时候现在构成太阳的氢气燃烧殆尽，太阳转而燃烧氦气。
The star is in its twilight years, having become a red giant.
这颗恒星处于衰退期，已经变成了一个红巨星。
The bigger a star is, the more rapidly it burns up its fuel, and the quicker it becomes a bloated red giant.
那么这颗恒星越大，其消耗能量的速度就越高，从而其变成一个膨胀红巨星的速度则越快。
First, it's really old - past the Red Giant phase, when stars balloon in size and swallow up planets in close orbits.
首先，它非常非常老了——它经历过红巨星阶段，这一阶段的恒星会急剧膨胀，吞噬在临近轨道运行的行星。
When a star similar to the sun fuses most of its hydrogen into helium, then the helium into carbon, the star becomes unstable and puffs out into a red giant.
当一颗类日恒星大部分的氢聚变为氦，氦又聚变成碳的时候，它就变得不再稳定，而膨胀成一颗红巨星。
One explanation is that HIP 13044 swallowed its inner planets during the red giant phase, which would make the star spin more quickly.
一种解释是HIP 13044在红巨星阶段吞噬了它的一些带内行星，这可能使它自转得更快。
Even though this would help Earth to survive the sun's red giant phase, its ultimate fate is probably sealed.
即使这样有助于地球度过太阳的红巨星阶段，但它的最终命运仍然未卜。
In 2005, an international team of astronomers discovered that dying red giant stars could act like a defibrillator and bring icy planets back from the dead.
2005年，一组国际天文学家发现，衰亡的红巨星能够像除纤颤器一样工作，让这颗冰冷的星球起死回生。
Convection within the red giant dredges the new proto-dust atoms from the core up to the surface.
红巨星内部的对流碰撞出新的原始尘埃原子会从其核心撞到表面。
This causes the star's outer layers to expand enormously and to cool and glow red as they do so, rendering the star a red giant.
这使得恒星的外层急剧膨胀，并因冷却而发出红色的光，而成为了一颗红巨星。
First, it's really old-past the Red Giant phase, when stars balloon in size and swallow up planets in close orbits.
首先，它太老了——甚至已经经过了红巨星阶段，红巨星阶段的恒星体积会迅速膨胀，并吞没近轨道的行星。
The sun will then become what's called a red giant, and its radius will reach just past the orbit of Venus.
太阳就变成了所谓哦红巨星，它的半径将会达到以前金星的运行轨道。
In another 5 billion years it will swell into a red giant and either consume our planet or bake its surface to concrete.
再过五十亿年，它将膨胀成一颗红巨星，到时就算我们的地球不被它吞并，行星表面也将被烤成混凝土。
Of course, in about five-billion years, our Sun will become a red giant and likely will swallow up the inner planets and the planets' accompanying moons.
当然，在大约50亿万年内，我们的太阳将会变成一颗红巨星，并且很可能将吞噬掉内行星和这些行星的卫星。
Its star is a red giant - a massive star near the end of its life. It is too dim to see in the night sky from Earth without a telescope.
Gliese 581是一颗已经接近生命终点的红巨星，星光十分暗淡，在没有天文望远镜的情况下，从夜空中根本无法看到。
From the spin rate of the parent star, which is faster than it should be, scientists think the red giant already has consumed some of HIP 13044b's sisters.
这颗红巨星的旋转速度要比正常情况下要快，基于这个现象，科学家们认为这颗红巨星已经形成了HIP 10044b的其他姐妹行星。
In this model, gas flows from the large red giant companion star into a disk and then onto the White Dwarf.
这个模型是指气体从大型红巨星伴星流到白矮星的吸积盘上然后被吸进白矮星中。
The sun will swell into a red giant .
太阳将膨胀为一颗红巨星。
The sun will swell into a red giant.
太阳将膨胀为一颗红巨星。
This star is a red giant with a visual magnitude of 17.
这颗恒星是一颗红巨人与一个视觉幅度17。
This star is a red giant with a visual magnitude of 17.
这颗恒星是一颗红巨人与一个视觉幅度17。
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