我々の銀河とアンドロメダ銀河

暫く前に、「我々の銀河とアンドロメダ銀河が衝突する」という記事を書いたが、NASAから更に詳しくて興味のある記事と画像がアップされた。

NASA's Hubble Shows Milky Way is Destined for Head-On Collision 05.31.12
NASA astronomers announced Thursday they can now predict with certainty the next major cosmic event to affect our galaxy, sun, and solar system: the titanic collision of our Milky Way galaxy with the neighboring Andromeda galaxy.
The Milky Way is destined to get a major makeover during the encounter, which is predicted to happen four billion years from now. It is likely the sun will be flung into a new region of our galaxy, but our Earth and solar system are in no danger of being destroyed.

興味のある方はご覧あれ。下の写真はNASAのサイトからの借用。