Discovering an Earth-like exoplanet in habitable zone is an important milestone for astronomers in search of extra-terrestrial life. While the radial velocity (RV) technique remains one the most powerful tools in detecting and characterizing exo-planetary sys- tems, we calculate the uncertainties in...
He believes that being in the so-called habitable zone, a region around the central star where liquid water can exist, is not enough for an Earth-like planet to host life. However, how exactly Milankovitch cycles affect habitability is not clear. "Some studies have found that having strong ...
Temperature is key to sustaining liquid water. Where we find liquid water, we are likely to find life. But it’s not the only factor to harbor life on a planet. For example, Venus and Mars are in the habitable zone of our sun. But it doesn’t mean they’ll have liquid water. MARS...
Viscosity is considered impossible to calculate from theory because it strongly depends on liquid structure, composition, and interactions as well as external conditions in a complicated way. Nobel laureate Steven Weinberg compared the difficulty of calculating the viscosity of water to the problem...
but even the possibility that previously frozen worlds could be rendered habitable by the death of their star, and then be pulled into a close orbit around that dead star where they can remain habitable, gives astrobiologists a new arena in which to consideralien life. Such a world would be...
The main purpose of this report is to explore the giant impact history of the planets in order to calculate the probability of having a giant Moon-like satellite companion, based on simulations done by Morishima et al. (2010). A giant impact between a planetary embryo called Theia, the Gree...
star dips at regular intervals, that implies that a planet is passing between us and the star, blocking out some of the light given off by the star and causing the dip in brightness. Measuring this dip precisely allows instruments like PLATO to very accurately calculate the size of the ...
Developer Posts: 732 MOVED: (is a little but of a noob) how do i show the habitable zone of a star? «on:March 15, 2016, 11:45:24 AM » This topic has been moved toUniverse Sandbox ² Alpha | Support & Bugs. http://universesandbox.com/forum/index.php?topic=16298.0 ...
The measurements of Hubble's constant shows it to be 68.9 kms raised to the -1 power, Mpc raised to the -1 power. How to calculate the age of the universe with the answer in billions of years?Throughout their orbits, the closest distance between Earth and Mars is roughly...
How to calculate the age of the universe with the answer in billions of years?How do we know the Earth formed 4.56 Ga ago if the oldest rock on Earth is 4.03 Ga old?The earliest evidence of life on earth . a. dates back from around the time of the Big Bang, roughly...