Mars

Dependence of the Martian Radiation Environment on Atmospheric Depth: Modeling and Measurement

Dependence of the Martian Radiation Environment on Atmospheric Depth: Modeling and Measurement

The energetic particle environment on the Martian surface is influenced by solar and heliospheric modulation and changes in the local atmospheric pressure (or column depth).

Habitable Zones & Global Climate

Water And The Interior Structure Of Terrestrial Planets And Icy Bodies

Water And The Interior Structure Of Terrestrial Planets And Icy Bodies

Water content and the internal evolution of terrestrial planets and icy bodies are closely linked. The distribution of water in planetary systems is controlled by the temperature structure in the protoplanetary disk and dynamics and migration of planetesimals and planetary embryos.

Habitable Zones & Global Climate

Habitable Planets Around Pulsars Theoretically Possible

Habitable Planets Around Pulsars Theoretically Possible

It is theoretically possible that habitable planets exist around pulsars. Such planets must have an enormous atmosphere that convert the deadly X-rays and high-energy particles of the pulsar into heat.

Genomics and Cell Biology

Cellular Division Strategy Shared Across All Domains Of Life

Cellular Division Strategy Shared Across All Domains Of Life

The three domains of life - archaea, bacteria, and eukarya - may have more in common than previously thought. Over the past several years, Ariel Amir, Assistant Professor in Applied Mathematics at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) has been studying how cells regulate size.

Origin & Evolution of Life

Fossil Microorganisms Indicate Life in the Universe is Common

Fossil Microorganisms Indicate Life in the Universe is Common

A new analysis of the oldest known fossil microorganisms provides strong evidence to support an increasingly widespread understanding that life in the universe is common.

Alpha Centauri

A New Approach For Detecting Planets In The Alpha Centauri System

A New Approach For Detecting Planets In The Alpha Centauri System

Yale astronomers have taken a fresh look at the nearby Alpha Centauri star system and found new ways to narrow the search for habitable planets there.

Microbiology

How Do Bacteria Adapt?

How Do Bacteria Adapt?

A fundamental prerequisite for life on earth is the ability of living organisms to adapt to changing environmental conditions. Physicists at the Technical University of Munich and the University of California San Diego have now determined that the regulation mechanisms used by bacteria to adapt to different environments are based on a global control process that can be described in a single equation.

Astronomy

Breakthrough Listen Releases Initial Results and Data from Observations of 'Oumuamua

Breakthrough Listen Releases Initial Results and Data from Observations of 'Oumuamua

No evidence of artificial signals emanating from the object so far detected by the Green Bank Telescope, but monitoring and analysis continue. Initial data are available for public inspection in the Breakthrough Listen archive.

Microbiology

Every Grain Of Sand Is A Metropolis for Bacteria

Every Grain Of Sand Is A Metropolis for Bacteria

Just imagine, you are sitting on a sunny beach, contentedly letting the warm sand trickle through your fingers. Millions of sand grains. What you probably can't imagine: at the same time, billions upon billions of bacteria are also trickling through your fingers.

Mars

MAVEN Mission Sheds Light on Habitability of Extrasolar Planets

MAVEN Mission Sheds Light on Habitability of Extrasolar Planets

How long might a rocky, Mars-like planet be habitable if it were orbiting a red dwarf star? It's a complex question but one that NASA's Mars Atmosphere and Volatile Evolution mission can help answer.

Astrochemistry

Chandra Reveals the Elemental Nature of Cassiopeia A

Chandra Reveals the Elemental Nature of Cassiopeia A

Where do most of the elements essential for life on Earth come from? The answer: inside the furnaces of stars and the explosions that mark the end of some stars' lives.

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