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Astronomers Discover That Life Could Exist On Planets With

Astronomers Discover That Life Could Exist On Planets With Fluctuating Orbital Tilt

redOrbit Staff & Wire Reports - Your Universe Online While experts have long believed that life could not exist on planets with a fluctuating tilt in their orbits, new research appearing in the April issue of the journal Astrobiology...

Latest Planetary habitability Stories

Don’t Forget F-type Stars In The Search For Life
2014-03-27 13:19:34

University of Texas at Arlington Scientists searching for habitable planets beyond Earth shouldn’t overlook F-type stars in favor of their more abundant, smaller and cooler cousins, according to new research from University of Texas at Arlington physicists. Stars fall into seven lettered categories according to their surface temperature, but they also differ in other factors such as mass, luminosity and abundance in the universe. Scientists looking for habitable planets typically...

Exoplanet Atmospheres
2014-03-05 07:53:33

John P. Millis, Ph.D. for redOrbit.com - Your Universe Online The holy grail of planetary astronomy is the search for a potentially habitable planet, or even better, one that is shown to already contain life. There are various parameters that are needed in order to ascertain the habitability of worlds, such as whether liquid water can be sustained on its surface. Recent studies, however, have found that identifying some of these characteristics is rather difficult, and we may in fact...

Superhabitable Exoplanet
2014-01-24 11:27:06

[ Watch the Video: Are Some Exoplanets More Super Than Earth? ] Brett Smith for redOrbit.com - Your Universe Online The stellar habitable zone (SHZ), or Goldilocks zone, is considered the range of ideal orbital distances from a star for creating the conditions necessary for life. A new paper published recently in the journal Astrobiology argues that some planetary bodies outside this zone may hold environments even more habitable for life than those found here on Earth. The authors...

How Many Habitable Exoplanets Exist
2013-11-26 13:17:30

John P. Millis, PhD for redOrbit.com - Your Universe Online In the last decade, exoplanet scientists have been finding new worlds at a brisk pace. But as the number of planetary bodies in our galaxy rises, questions about how many of these may, in fact, be habitable have been reaching a crescendo. The debate centers on the criteria for what it takes for a planet to be considered habitable. It seems the presence of liquid water on the surface is necessary, though some researchers are now...

In The Hunt For Habitable Planets, A New Model May Be Key
2013-11-14 13:54:41

Lee Rannals for redOrbit.com - Your Universe Online Researchers using new theoretical models have created a new method to simplify the search for Earth-like planets. The new models help rule out the possibility of Earth-like conditions on certain planets outside of our solar system. Yann Alibert, of the Center for Space and Habitability (CSH) at the University of Bern, and colleagues based the study on the mass and radius of a planet, helping to determine criteria that exclude the...

Alien Worlds: How Common Are Habitable Planets?
2013-11-05 02:51:36

[ Watch the Video: Earth May Not Be So Unique After All ] redOrbit Staff & Wire Reports - Your Universe Online New statistical analysis of data obtained by NASA’s now-retired Kepler spacecraft has revealed that one out of every five sun-like stars have at least one Earth-sized planet in the habitable zone. “What this means is, when you look up at the thousands of stars in the night sky, the nearest sun-like star with an Earth-size planet in its habitable zone is probably only...

Exoplanet With Water-Rich Atmosphere
2013-09-06 07:43:41

John P. Millis, PhD for redOrbit.com - Your Universe Online The search for a habitable planet beyond Earth is on. Scientists have been searching the heavens to find an exoplanet that is just the right distance from its host star to support liquid water, all the while targeting a surface gravity we would be familiar with and an atmosphere oozing with oxygen. Such a planet has not yet been found, but progress has been made, and we continue to find smaller and smaller planets closer to the...

Complex Origins Of Solar Systems
2013-07-25 11:12:46

John P. Millis, PhD for redOrbit.com - Your Universe Online Centuries ago, as astronomers began to discover the extent of our solar system, they also began to develop theories on how our Solar System was formed and how it evolved. The challenge was that the only model available was that of our own - other planetary systems would not be discovered until the later part of the 20th century - so researchers assumed that all solar systems would likely look like ours: central star, small rocky...

Hunting For Exoplanets
2013-07-19 10:34:45

redOrbit Staff & Wire Reports - Your Universe Online The hunt is on for planets that, like Earth, have the conditions necessary for life to survive on their surfaces. But what exactly are scientists looking for? Earlier this week, NASA officials shed a little light on precisely what conditions they are seeking on worlds located beyond our solar system. These worlds, which are also known as exoplanets, have to meet a handful of different criteria in order to be considered potentially...

What Really Makes A Habitable Planet?
2013-05-04 05:41:48

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online The Holy Grail in the search for planets outside our solar system is finding one that could potentially support life. Traditionally, this means finding a planet with features similar to Earth, which is just the right distance from its host star that liquid water could be supported on the surface. Scientists believe the presence of liquid water on the surface is a necessary component for the proliferation of life. And a...


Latest Planetary habitability Reference Libraries

Planetary Astronomy
2014-01-12 00:00:00

Image Caption: Artistic concept of a planetary system. Credit: Wikipedia/NASA/JPL-Caltech The term Astronomy encompasses a broad range of topics, including the study of stars, galaxies, and planets. In order to focus on the different areas of study, many subfields of astronomy emerge. One such area is the study of planets known, appropriately, as Planetary Astronomy. Observational Planetary Astronomy Even within the field of Planetary Astronomy, there are several divisions to...

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