heat - spaceanswers.com
What is Heat Death? Is this one of the ways the universe could end? Space Exploration
life - spaceanswers.com
In the first billion years of Earth’s history, the planet was bombarded by primordial space rocks, while a faint Sun provided much less heat News Small stars found to pack a big X-ray punch for would-be planets
Plate tectonics are not essential to a planets habitability
2018年7月31日 · They looked at how much heat its climate could retain based on its initial heat budget, or the amount of heat and heat-producing elements present when a planet forms. Some elements produce heat when they decay. On Earth, decaying uranium produces thorium and heat, and decaying thorium produces potassium and heat.
What’s the brightest thing in the universe? - spaceanswers.com
2012年6月16日 · Aside from gamma-ray bursts, the other brightest objects in the universe are quasars. These are the areas directly around a black hole where stars, gas and light are being pulled inwards. It is estimated that some quasars emit more light than 100 galaxies. Image courtesy of ESO / M. Kornmesser. Tags: Gamma Ray Burst, Quasar, Sun, Universe
Stephen Hawking’s final theory - All About Space
2018年5月3日 · The theory was submitted before the death of Professor Hawking and uses string theory to predict a much simpler version of our current universe, compared to other theories surrounding the events after the Big Bang. Professor Hertog first announced the theory at a conference at the University of Cambridge, England in July 2017.
Is space created as the universe expands? - All About Space
As the universe expands we know the distances between objects is getting larger. The exact machinations of this process, however, are still unknown. An analogy often used is that it is similar to the surface of a balloon; the rubber of the balloon isn’t really expanding from a central point but it is all expanding equally.
Astronomers detect the most distant oxygen ever discovered
2018年5月17日 · This discovery also marks the most distant oxygen ever detected in the universe as well as the most distant galaxy ever observed by either ALMA or the VLT. ALMA and an international team of astronomers detected a very faint glow in MACS1149-JD1 that exposed the presence of ionised oxygen.
Universe found to be turning a shade of green - All About Space
2017年1月11日 · These galaxies are observed 2 billion years after the Big Bang, when the universe was 70 times denser than today. “The O++ emission line (which falls between the two vertical dashed lines) is so strong that it even distorts the entire infrared portion of the galaxy spectrum, which is otherwise starlight,” Malkan says.
Astronomers unearth a cosmic titan from the early Universe
2018年10月18日 · A team of astronomers, led by Olga Cucciati of Istituto Nazionale di Astrofisica (INAF) Bologna, Italy, have used the VIMOS instrument on ESO’s Very Large Telescope (VLT) to identify a gigantic proto-supercluster of galaxies forming in the early Universe, just 2.3 billion years after the Big Bang.
Astronomers work out how Jupiter- and Saturn-like planets form
2016年10月31日 · It is possible that after the protoplanet has collapsed to the density of Jupiter its disc will heat up more like in core-accretion. Likewise, the hotter gas found in the core-accretion case would be partially ionised, a favourable environment for effects of magnetic fields, completely neglected so far.