Professor Stephen Hawking has called for a new era of space conquest akin to Christopher Columbus’ discovery of the new world.
In a speech honouring Nasa’s 50th anniversary, the 66-year-old astrophysicist said the situation we face “is like Europe before 1492″.
“People might well have argued it was a waste of money to send Columbus on a [...]
Archive for the ‘Mokslas’ Category
Nasa ’should follow Columbus’
Posted in Angliškai on Balandis 23, 2008 | Leave a Comment »
Mokslas
Posted in Mokslas on Balandis 19, 2008 | Leave a Comment »
Čia aš pabandysiu surinkti ir suklasifikuoti man įdomius straipsnius.
Ion engine enters space race
Posted in Angliškai on Balandis 19, 2008 | Leave a Comment »
Engineer Neil Wallace peers into a huge vacuum chamber designed to replicate – as far as possible – the conditions of space.
Cryogenic pumps can be heard in the background, whistling away like tiny steam engines.
Using helium gas as a coolant, they can bring down the temperature in the vacuum chamber to an incredibly chilly 20 [...]
More doubt on cosmic climate link
Posted in Angliškai on Balandis 19, 2008 | Leave a Comment »
Research has thrown further doubt on the notion that cosmic rays are a major influence on the Earth’s climate.
The idea that modern global warming is due to changes in cloudiness caused by solar influences on cosmic rays is popular with “climate sceptics”.
But scientists found changes in cosmic ray flux do not affect cloud formation – [...]
Visata dvynė prieš Didįjį sprogimą?
Posted in Lietuviškai on Balandis 19, 2008 | Leave a Comment »
Jeigu paklausite fiziko, kas įvyko prieš arba per Didįjį sprogimą, jis greičiausiai nesileis į ilgas diskusijas ir atsakys, kad tai priklauso nuo kiekvieno žmogaus vaizduotės. Bendroji reliatyvumo teorija šiuo atveju yra bejėgė – esant nuliniam tūriui, mes gauname tik krūvą nulių ir begalybių.
Tačiau per pastaruosius kelerius metus atsirado nauja teorija, pavadinta kilpine kvantine gravitacija (LQG). [...]
Stars born in galactic wilderness
Posted in Angliškai on Balandis 19, 2008 | Leave a Comment »
Baby stars have been discovered spawning in the otherwise barren outskirts of a galaxy.
The finding has surprised astronomers because the galactic periphery was assumed to lack high concentrations of ingredients needed to form stars.
The stars can be seen in a new image of the Southern Pinwheel galaxy, or M83, obtained by a Nasa space telescope [...]
