Language Selection

English French German Italian Portuguese Spanish

Nasa probe strikes Comet Tempel 1

Filed under
Sci/Tech

The washing machine-sized "impactor" collided with Comet Tempel 1 at a relative speed of 37,000km/h, throwing up a huge plume of icy debris.

The probe's mothership, the Deep Impact spacecraft, watched the event from a safe distance, sending images to Earth.
"We hit it just exactly where we wanted to," said an ecstatic Dr Don Yeomans, a Nasa mission scientist.

"The impact was bigger than I expected, and bigger than most of us expected. We've got all the data we could possibly ask for."

Comets - giant "dirty snowballs", as some have called them - are believed to contain materials that have remained largely unchanged since the formation of the Solar System 4.6 billion years ago.

Scientists hope that by getting "under the skin" of Comet Tempel 1, they can gain new information on the Solar System's original composition and perhaps even how life emerged in our corner of the Universe.

"We are in the business of opening new frontiers in the exploration of space. When we analyse the data, we will have a whole new insight into the Universe."

The collision occurred at just after 0550 GMT at a distance of about 133 million km from Earth.

"Before we knew so little about the comet nucleus; we had little idea of what the surface looked like."

"It was like mosquito hitting a 747. What we've found is that the mosquito didn't splat on the surface, it's actually gone through the windscreen."

It will take a few days for all the data from Deep Impact's observations to download, and scientists will then spend several months interpreting it.

Full Story.

More in Tux Machines

Games: Ostriv, Back to Bed, EVERSPACE, Hiveswap: Act 1

Openwashing and Microsoft FUD

BlueBorne Vulnerability Is Patched in All Supported Ubuntu Releases, Update Now

Canonical released today new kernel updates for all of its supported Ubuntu Linux releases, patching recently discovered security vulnerabilities, including the infamous BlueBorne that exposes billions of Bluetooth devices. The BlueBorne vulnerability (CVE-2017-1000251) appears to affect all supported Ubuntu versions, including Ubuntu 17.04 (Zesty Zapus), Ubuntu 16.04 LTS (Xenial Xerus) up to 16.04.3, Ubuntu 14.04 LTS (Trusty Tahr) up to 14.04.5, and Ubuntu 12.04 LTS (Precise Pangolin) up to 12.04.5. Read more

Security: Updates, 2017 Linux Security Summit, Software Updates for Embedded Linux and More

  • Security updates for Tuesday
  • The 2017 Linux Security Summit
    The past Thursday and Friday was the 2017 Linux Security Summit, and once again I think it was a great success. A round of thanks to James Morris for leading the effort, the program committee for selecting a solid set of talks (we saw a big increase in submissions this year), the presenters, the attendees, the Linux Foundation, and our sponsor - thank you all! Unfortunately we don't have recordings of the talks, but I've included my notes on each of the presentations below. I've also included links to the slides, but not all of the slides were available at the time of writing; check the LSS 2017 slide archive for updates.
  • Key Considerations for Software Updates for Embedded Linux and IoT
    The Mirai botnet attack that enslaved poorly secured connected embedded devices is yet another tangible example of the importance of security before bringing your embedded devices online. A new strain of Mirai has caused network outages to about a million Deutsche Telekom customers due to poorly secured routers. Many of these embedded devices run a variant of embedded Linux; typically, the distribution size is around 16MB today. Unfortunately, the Linux kernel, although very widely used, is far from immune to critical security vulnerabilities as well. In fact, in a presentation at Linux Security Summit 2016, Kees Cook highlighted two examples of critical security vulnerabilities in the Linux kernel: one being present in kernel versions from 2.6.1 all the way to 3.15, the other from 3.4 to 3.14. He also showed that a myriad of high severity vulnerabilities are continuously being found and addressed—more than 30 in his data set.
  • APNIC-sponsored proposal could vastly improve DNS resilience against DDoS