Get ready and you will enjoy a space travel. The sky outside your spacecraft is mostly black. The planet you’re looking for is 4. 65 billion    1    (mile) away. Almost no light    2    (reach) it. Suddenly you see a glow (暗光) in the    3     (distant). As you approach, it becomes bigger and stranger. The light    4     (shine) ahead of you is bright pink. Getting closer, you realize    5    is giving off this glow. It's a magenta (紫红色的) planet!

    6    (name) GJ 504b, the planet is made of pink gas. It's similar to Jupiter, a giant gas planet in our own solar system. But GJ 504b is four times more    7     (mass). At 460°F, it’s the temperature of a hot oven, and it’s the planet’s intense heat that causes it to glow.

You stop your spacecraft to take     8    close look. The sky turns pink as you enter GJ 504b’s atmosphere. Since GJ 504b is made of gas, it has no solid surface. So you can fly right inside the planet, in    9    the gas envelops you like a thick fog. As you go    10    (deep), the gas begins to get darker. If you keep going down, your spacecraft could melt from the heat. You get away from this pink world and back into the darkness of outer space.