Space Probes

Map of the polarisation of the Cosmic Microwave Background Radiation (Image ESA and the Planck Collaboration)

Nearly two years after presenting the best map ever made of the cosmic microwave background radiation, ESA revealed another map created using data collected by the Planck Surveyor space probe between 2009 and 2013. This new map shows the polarization of the cosmic microwave background radiation dating back to the early stages of the universe. It shows that the first stars started forming about 550 million years after the Big Bang, 100 million years later than previously thought.

Image of Pluto and Charon magnified four times to make them more visible (Image NASA/JHU APL/SwRI)

Yesterday, NASA released the first photographs of the dwarf planet Pluto and its main satellite Charon taken by the space probe New Horizons after its awakening. The spacecraft was still over 200 million kilometers (about 126 million miles) away from Pluto but February 4, 2015 was the 109th anniversary of the birth of Clyde Tombaugh, who in 1930 discovered the dwarf planet. A small portion of Tombaugh’s ashes were placed aboard New Horizons.