The universe is expanding uniformly according to research led by University College London (UCL). The researchers studied the cosmic microwave background (CMB) which is the remnant radiation from the Big Bang. It shows the universe expands the same way in all directions, supporting the assumptions made in cosmologists’ standard model of the universe.
New research reveals that fewer than predicted planets may be capable of harbouring life because their atmospheres keep them too hot. Computer simulations show that planets similar to or larger in mass than the Earth that are born with thick envelopes of hydrogen and helium are likely to retain their stifling atmospheres.
Some of the final results sent back by ESA’s Venus Express before it plummeted down through the planet’s atmosphere have revealed it to be rippling with atmospheric waves and, at an average temperature of -157 °C, colder than anywhere on Earth. The aerobraking experiment has improved our knowledge of our planetary neighbour and holds great promise for ESA’s forthcoming ExoMars mission.