NASA's solar-powered Juno mission heads to Jupiter today, Orbiter finds water on Mars?

NASA's Juno mission has been beset by delays for a while now, but the solar-powered excursion is finally scheduled to take off for Jupiter today, in the hopes of making history. Throughout the course of its five-year journey, the "armored tank" spacecraft will be powered exclusively by a trio of solar panels, each measuring nine feet wide and 30 feet long. Close to Earth, these panels will be able to generate 14 kilowatts of electricity, but as Juno ventures deeper into space, they'll crank out only 400 watts. Power, however, shouldn't be an issue, as NASA has outfitted the craft with energy efficient onboard computers, and has drawn out a route that will maximize its exposure to the sun. Juno should arrive at Jupiter by 2016 and, if all goes to plan, will ultimately travel farther than any solar-powered craft ever has. The agency expects their creation to set the record in April 2017, when it should be about 507 million miles away from the sun, eclipsing the 492 million mile mark likely to be set by Russia's sun-juiced Rosetta craft, in 2012.

Meanwhile, closer to home, the Mars Reconnaissance Orbiter has just delivered new imagery of the Red Planet's mountains, providing perhaps the strongest evidence that water still flows there. The images reveal long, finger-like tendrils that extend down steep slopes, including the rims of craters. They appear during the summer and fade away once winter arrives, suggesting the presence of a volatile material. Researchers failed to identify water above ground, but speculate that briny water may be flowing underground. Launch past the break to see the images, in all their eight seconds of glory. 

Bite Counter knows how many donuts you devoured, shames you into eating less

Because all you ever really wanted was an $800 bracelet that counts calories... enter the Bite Counter. It's the retro-lookin' lovechild of two clemson university researchers that helps its hosts approximate caloric consumption by counting how many bites they take. Color us skeptical, as the meatbag wearing the gizmo has to -- gasp! -- actually remember to both start and stop the device each time they feast. The duo is hopeful it'll glean useful data for future research, as the contraption can be used "anywhere, such as at restaurants or while working" -- you know, places where scribbling how much you eat in a secret diary is frowned upon. Best of luck fellas, but until it hits a sub-century price point, we'll just stick to eating salads.

To enable grub in linux

mount the device say at /mnt
mount /dev/sda5 /mnt
gurb-install --root-directory=/mnt/ /dev/sda
mount --bind /proc /mnt/proc
mount --bind /dev /mnt/dev
mount --bind /sys /mnt/sys
chroot /mnt



update-grub2

Creating Samba Server

*installing samba in ubuntu 
apt-get install samba samba-common
*installing GUI-tool
apt-get install system-config-samba

Booting from ISO image in harddisk

It is always done with root privileges.  

What can be done is u create one file named say ubuntu-live in the directory /etc/grub.d/. And in that file u put the contensts given below starting from echo.

-----------------------------------------------------------------------------

echo "Adding $(egrep menu[e]ntry $0 | cut -d'"' -f2)" >&2
cat << EOF
menuentry "Ubuntu 10.04 -LTS Live CD" {
loopback loop (hd0,3)/ubuntu-10.04-desktop-i386.iso
linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=/ubuntu-10.04-desktop-i386.iso file=(loop)/preseed/ubuntu.seed quiet splash bootkbd=sg --
initrd (loop)/casper/initrd.lz
}

---------------------------------------------------------------------------------------------------------------

Make the file ubuntu-live executable by putting command : chmod +x ubuntu-live

Now update the grub image by  putting command in terminal : update-grub 

Reboot ur machine and Now u can have new grub image ofUbuntu 10.04 -LTS Live CD in the start up promt when grub starts.
Select it.

**attention: it is recommended to put the iso image in another drive. Because when we try to install in the same drive what ubuntu-live-cd will do is format it. So iso image will no longer stay there. It might happen the process break.

Let us Say we put iso image  in hard disk first , i have put it into partitions 3 of first hard disk. so it is written as (hd0,3). and pathname in that partitions. follows.

Facebook and Skype chat with pidgin

These are the links for debian file which can be downloaded and installed with GDebi package installer.

http://eion.robbmob.com/skype4pidgin.deb
http://pidgin-facebookchat.googlecode.com/files/pidgin-facebookchat-1.67.deb

Restart Pidgin and U will be having Facebook+skype embedded with it.

Regarding FTP server

apt-get install vsftpd
put ur file home/ftp
Open ur browser put url address as :
ftp://ur_computer_ip 

Now Settings

to change the default directory to something else
sudo usermod -d /direcotory/ftp ftp