Hi,

I am looking for a space travel manga. It is about 3 children of light and they have the task of building a spaceship to go to Mars. There the find out that the alien wants their help to rescue Betelgeuse which is just a little girl.

In addition I am also looking for another space manga. It is set in a dystopian world and the planets are girls except for the sun who is a guy. Earth is sick and the planets gather on earth trying to help her. The main character is taught physics by the moon.

Not sure about the first one, though it vaguely reminds me of St&rs.

The second is Madowanai Hoshi.

Thanks!! Both are what I looked for