15 December 1970 the station Venera 7 successfully landed on the surface of Venus. This happened after 120 days after launch from Earth on August 17. This is the first space station, which successfully landed on another planet. In addition, Venus 7 first carried out the data transmission after a soft landing on Venus. The purpose of the launch of this station was to deliver the lander, several previous missions failed because the devices were designed for a pressure of 20 atmospheres and their flattened at an altitude of about 25 km at the same time to Venus flew two a similar design to the station. However, the second spacecraft, which was launched a little later, if you change a flight trajectory to Venus there was an explosion engine of the upper stage. It remained in earth orbit, as well as in the USSR it was customary to inform about a failed space launches, this station received the name Kosmos 359. According to the results of measurements, conducted on the descent module Venera-7, calculated the pressure and the temperature on the planet Venus. They accounted for 90 ±15 atmospheres and 475 ±20 °C.
Venera-7
15 December 2002, the resumed registration of domains in the zone su. Formerly this area corresponded to the online resources of the Soviet Union. The Registrar of the zone ru, Ru-Center, this day began to register trademark holders. For other network users the opportunity to make your domain ending in .su appeared only on 31 may 2003. The status of the zone remains uncertain, as its importance as a national domain, the USSR is already lost. At the moment su code is not included in the official list of geographic codes. However, it has the status reserved exclusively to guarantee its failure to provide for other purposes. Domain zone .su (the initial idea was to make the area .ussr) was created in 1990, but in 1994 there was a domain .EN and the zone decided to give up and even began preparations for phase-out.
Domain .su
On 15 December 2011, Chrome became the most popular browser in the world, if you count the versions of the browsers individually. This is a historic moment for the browser happened to his 15-second version. And walked it a powerful competitor in the form of Internet Explorer 8. On Informatii StatCounter for that day, Chrome 15 was used by 24.55 per cent of Internet users, while IE8 audience a little more modest – of 22.16%. Then with a large margin was the latest version of Firefox – 15,53%. In 2011, if you take all version together, Internet Explorer was in the lead with 38.5%, and Chrome was only 27,08%. But in 2012, Chrome came in first place with 32,76% of the market, leaving Internet Explorer behind with the index 31,94%. From this moment the percentage of Chrome grows while IE falls.
Statistics of popularity of browsers 2011