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Archive for the ‘opinion’ Category

How much do we know about the universe? Hubble’s Ultra Deep Field Experiment

September 13th, 2017

When we looked at the space at night, we see a lot of stars, dotted on a vast dark space. But is there anything in the dark area?

Guess, in the photo below, how many stars are in the red circle? None? A few? A few thousand? Billions of stars?

How many starts in the red circle?

How many starts in the red circle?

In 2002-2004, Hubble telescope zoomed in this region and found, in this seemingly empty space, there are not 10 stars, 1000 stars, but at least 3,000 galaxies each with hundreds of billions of stars!

There are 3 thousand galaxies with trillions of stars

There are 3 thousand galaxies with trillions of stars

What do we know about the universe?

Author: Xu Cui Categories: opinion, writing Tags:

今天看到好视频:老树画画 《做一个梦》

February 10th, 2016

看这个视频真是痛快!去他妈的“成功”!为别人活有什么用?

youtube版:

youku版:

Author: Xu Cui Categories: life, opinion Tags:

I support PLoS

October 24th, 2008

As an author, when you publish paper, you pay to the publisher;
As a reader, when you read paper, you pay to the publisher;
This is absolutely ridiculous! The research is done using tax payer’s money and tax payers have to pay to access the publication!

I Support PLoS - Public Library of Science

Author: Xu Cui Categories: opinion Tags:

Life is learning

October 22nd, 2008
/**
 * Life is learning
 * So,
 */

while(alive)
{
  learn;
}
Author: Xu Cui Categories: life, opinion Tags: