2009国际天文年活动将在地区、国家、区域及全球各层面展开。各国2009国际天文年筹备机构将专业和业余天文学家、科学中心以及科学记者联合起来策划2009年的活动，从而形成一个全球性的互动网络。目前，这个互动联系网已有115个国家加入，预计最终将达到140个国家，覆盖97%的全球人口。
天文年音乐主题(IYA2009 Musical Theme)
巨人的肩膀 (Shoulders of Giants)
It was a calm and cloudless night but it was all still a blur
A shaking of our Universe was just about to occur
It was Summertime... 1609
when Galileo used his telescope for the very first time
and he saw mountains and craters on the moon
and a Milky Way with thousands of stars
and he saw Jupiter, with four tiny moons
he was the only man on Earth that night who knew
That Copernicus was right
come outside with me tonight
and I can show you wonders of the world
to surprise and delight
I've got my telescope with me
just wait until you see
that on the Shoulders of Giants....
... we'll see beyond!
The world turns round and round now around 400 years have flown
since Galileo's telescope first focused the unknown
Now we use bigger glass to peer into the past
And we're discovering the Universe's secrets at last
And there are geysers on Saturn's icy moon
and planets circling hundreds of stars
while all the Universe expands like a balloon
from Galileo's tiny scope we've come so far
Galileo was right
when he looked out in the night
and he discovered wonders of the world
to surprise and delight
I've got my telescope with me
just wait until you see
we'll stand on the Shoulders of Giants...
And every step follows the one before
and opens up a new frontier to explore
our 'scopes are dancing in space to see the beauty and grace
Oh, Galileo would approve, that's for sure
And still for me and you we can join in on this too
Just climb up here with me where we'll see more
It's a calm and cloudless night come outside with me tonight
and I can show you wonders of the world to surprise and delight
I've got my telescope with me just wait until you see (oh, wait until you see)
we'll stand on the Shoulders of Giants (Galileo knew)
That Copernicus was right (Johannes)
Come outside with me tonight (Kepler found those)
and I can show you wonders of the world (planetary motions on the)
to surprise and delight (Shoulders of Giants)
I've got my telescope with me (And Isaac)
Just wait until you see (Newton found his)
we'll stand on the Shoulders of Giants (Universal Laws)
(He stood on the Shoulders of Giants...)
...to see beyond!
更多音乐：
宇宙的发现者 Discover The Universe
远方 Far Away
地球之歌 Earth's Song
下载地址：http://www.astronomy2009.org/resources/multimedia/audio/