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exoplanet

number of breaks: 5

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Are planets with oxygen-rich atmospheres rare?

Complex life on Earth requires oxygen. Understanding how oxygen levels have evolved on our planet can provide an insight into our own evolution and the possibility of complex life evolving elsewhere. Current theories suggest that Earth's O2 levels have risen three times over its 4.5... click to read more

  • Lewis Alcott | PhD student at University of Leeds, Leeds, UK
  • Benjamin Mills | Associate Professor at University of Leeds, Leeds, UK
Views 120
Reading time 3 min
published on Aug 11, 2020
Climatic Changes for Earths in Sun-like Stellar Binaries

The mild oscillation of Earth's axial tilt, or obliquity, over time is less than a few degrees and is one of the reasons that complex lifeforms prospered on our planet. Will this be true if the giant planets are replaced by a Sun-like star? Alpha... click to read more

  • Billy Quarles | Research Scientist at Georgia Institute of Technology, Atlanta, Georgia, USA
Views 623
Reading time 3.5 min
published on Jun 29, 2020
Gaseous heavy metals in the atmosphere of an ultra-hot exoplanet

KELT-9 is a hot blue star in the constellation Cygnus. It has a temperature of over 10,000 K and a mass that is over twice larger than the Sun. It is very luminous (though not visible with the naked eye) and as such belongs to... click to read more

  • Jens Hoeijmakers | Postdoctoral Research Fellow at Département d'Astronomie, Geneva Observatory, University of Geneva, Geneva, Switzerland; Center for Space and Habitability (CSH), University of Bern, Bern, Switzerland
Views 1715
Reading time 4 min
published on May 14, 2019
An exoplanet with glowing water reveals its nature

Space-based observatories such as the Hubble Space Telescope are providing valuable insights into the atmospheres of planets outside our solar system, known as "exoplanets". We have recently used Hubble to uncover the most compelling evidence to date for a stratosphere layer on one such exoplanet,... click to read more

  • Tom Evans | Research Fellow at College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, United Kingdom
Views 2446
Reading time 3.5 min
published on May 24, 2018
An exoplanet surrounded by an atmosphere larger than its star

In the past 20 years, scientists have discovered many planets around other stars than the Sun. Nearly half of these so-called exoplanets orbit extremely close to their star (more than ten times closer than Mercury revolves around the Sun in our Solar System), raising many... click to read more

  • Vincent Bourrier | Postdoctoral Research Fellow at Department of Astronomy, Geneva Observatory, University of Geneva, Geneva, Switzerland
Views 2781
Reading time 4 min
published on Nov 26, 2015