Can't connect data.worldwind.arc.nasa.gov

When I use "getWMSImage.sh". My computer can't get the image .
I use the command : " getWMSImage.sh -o jangmiTerrain.tiff 115 15 130 30"

yjane@YJane:~/vapor/vapor-2.3.0/bin$ getWMSImage.sh -o jangmiTerrain.tiff 115 15 130 30
Extent: 115,15 (LL) 130,30 (UR)
Image resolution: 1024 X 768
Image filename: jangmiTerrain.tiff
Image layer: bmng200406
WMS URL: http://data.worldwind.arc.nasa.gov/wms
wget -O tmpImage http://data.worldwind.arc.nasa.gov/wms?request=GetMap&service=wms&versio...
--2014-11-04 23:12:55-- http://data.worldwind.arc.nasa.gov/wms?request=GetMap&service=wms&versio...
正在解析主机 data.worldwind.arc.nasa.gov (data.worldwind.arc.nasa.gov)... 128.102.22.115
正在连接 data.worldwind.arc.nasa.gov (data.worldwind.arc.nasa.gov)|128.102.22.115|:80... 失败：连接超时。
重试中。
I want to know if there have any other ways to get the image i need .

Please help me .