Extrasolar Planets

Searching for Earth-mass planets around α Centauri

Searching for Earth-mass planets around α Centauri

This work is part of an ongoing project which aims to detect terrestrial planets in our neighbouring star system α Centauri using the Doppler method.

Astrochemistry

Astronomers come up dry in search for water on exoplanets

Astronomers come up dry in search for water on exoplanets

A team of astronomers has made the most precise measurements yet of water vapour in the atmospheres of Jupiter-like planets beyond our Solar System and found them to be much drier worlds than expected.

Genomics and Cell Biology

Four billion-year-old chemistry in cells today

Four billion-year-old chemistry in cells today

Parts of the primordial soup in which life arose have been maintained in our cells today according to scientists at the University of East Anglia.

Extrasolar Planets

Atmospheric dynamics of terrestrial exoplanets over a wide range of orbital and atmospheric parameters

Atmospheric dynamics of terrestrial exoplanets over a wide range of orbital and atmospheric parameters

The recent discoveries of terrestrial exoplanets and super Earths extending over a broad range of orbital and physical parameters suggests that these planets will span a wide range of climatic regimes.

Astrochemistry

H2O abundances in the atmospheres of three hot Jupiters

H2O abundances in the atmospheres of three hot Jupiters

The core accretion theory for giant planet formation predicts enrichment of elemental abundances in planetary envelopes caused by runaway accretion of planetesimals, which is consistent with measured super-solar abundances of C, N, P, S, Xe, and Ar in Jupiter's atmosphere.

Biosignatures & Paleobiology

A New Approach to SETI: Targeting Alien Polluters

A New Approach to SETI: Targeting Alien Polluters

Humanity is on the threshold of being able to detect signs of alien life on other worlds. By studying exoplanet atmospheres, we can look for gases like oxygen and methane that only coexist if replenished by life.

Extrasolar Planets

Direct Imaging of Exoplanets in the Habitable Zone with Adaptive Optics

Direct Imaging of Exoplanets in the Habitable Zone with Adaptive Optics

One of the primary goals of exoplanet science is to find and characterize habitable planets, and direct imaging will play a key role in this effort.

Oceanic Research

Oceans Are Vital for Life On Other Planets

Oceans Are Vital for Life On Other Planets

New research published today in the journal Astrobiology shows the vital role of oceans in moderating climate on Earth-like planets.

Extrasolar Planets

Revision of Earth-sized Kepler Planet Candidate Properties with High Resolution Imaging by Hubble Space Telescope

Revision of Earth-sized Kepler Planet Candidate Properties with High Resolution Imaging by Hubble Space Telescope

We present the results of our Hubble Space Telescope program and describe how our image analysis methods were used to re-evaluate the habitability of some of the most interesting Kepler planet candidates.

Mars

Water in the Martian Regolith from OMEGA/Mars Express

Water in the Martian Regolith from OMEGA/Mars Express

Here we discuss one of the current reservoirs of water on Mars, the regolith and rocks exposed at the surface.

Extrasolar Planets

Stellar Activity Masquerading as Planets in the Habitable Zone of the M dwarf Gliese 581

Stellar Activity Masquerading as Planets in the Habitable Zone of the M dwarf Gliese 581

The M dwarf Gliese 581 is believed to host four planets, including one (GJ 581d) near the habitable zone that could possibly support liquid water on its surface if it is a rocky planet.

More top stories from July.