日日月月，七夕连想

一年一次，今天是七夕。

以前拍的一张星空照里可很清楚地看到被那银河隔离的牛郎，织女。也说过：有时想问璨澜星空深处那幽幽的牛郎：为什么不用你那善于劳动的双手为自己 DIY 一座跨过银河的桥？！真是：起舞弄双影，何似在人间？

月月年年。每天站在同一地点和时间，月亮一个月里的型状和位置：

每天站在同一地点和时间，太阳一年里的位置：

象银河那样的星系 - 已知宇宙中大约存在着1-2000 亿个，平均每个星系中大约有1亿个太阳：

知道我们在宇宙中的位置，可帮我们平心笑对生活。想起很喜爱的一首歌：

Whenever life gets you down, Mrs Brown
And things seem hard or tough
And people are stupid, obnoxious or daft
And you feel that you've had quite enough

Just remember that you're standing on a planet that's evolving
And revolving at nine hundred miles an hour
It's orbiting at nineteen miles a second, so it's reckoned
A sun that is the source of all our power

The sun and you and me and all the stars that we can see
Are moving at a million miles a day
In an outer spiral arm at forty thousand miles an hour
Of the galaxy we call the Milky Way

Our galaxy itself contains a hundred billion stars
It's a hundred thousand light years side to side
It bulges in the middle sixteen thousand light years thick
But out by us, it's just three thousand light years wide

We're thirty thousand light years from galactic central point
We go round every two hundred million years
And our galaxy is only one of millions of billions
In this amazing and expanding universe

The universe itself keeps on expanding and expanding
In all of the directions it can whizz
As fast as it can go – the speed of light, you know
Twelve million miles a minute and that's the fastest speed there is

So remember when you're feeling very small and insecure
How amazingly unlikely is your birth
And pray that there's intelligent life somewhere up in space
'Cause there's bugger all down here on earth