Category Astronomy/Space

Device could Help Detect Signs of Extraterrestrial Life

091620-life-detection
A fully automated microchip electrophoresis analyzer could someday be deployed in the search for life on other worlds.
Credit: Adapted from Analytical Chemistry 2020, DOI: 10.1021/acs.analchem.0c01628

Although Earth is uniquely situated in the solar system to support creatures that call it home, different forms of life could have once existed, or might still exist, on other planets. But finding traces of past or current lifeforms on other worlds is challenging. Now, researchers reporting in ACS’ Analytical Chemistry have developed a fully automated microchip electrophoresis analyzer that, when incorporated into a planetary rover, could someday detect organic biosignatures in extraterrestrial soil.

One critical piece of evidence for life beyond Earth is the presence of certain organic...

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How Planetary Nebulae get their Shapes

Four planetary nebulae as seen by Hubble, showing four of many nebular morphologies. Astrononers used high spatial resolution millimeter-wavelength images of molecules in the winds of fourteen planetary nebulae to conclude that the widely varing shapes of planetary nebulae are primarily the result of the evolution of central stars with orbiting binary companions.
NASA/HST

About 7.5 billion years from now, our sun will have converted most of its hydrogen fuel into helium through fusion, and then burned most of that helium into carbon and oxygen. It will have swollen to a size large enough to fill the solar system nearly to the current orbit of Mars, and lost almost half of its mass in winds...

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Scientist Searches for Stellar Phosphorus to find potentially Habitable Exoplanets

Pink planet up close with a star in the background and multiple other stars further away
Courtesy of NASA/JPL-Caltech A Southwest Research Institute scientist has identified stellar phosphorus as a probable marker in narrowing the search for life in the cosmos. Stars with phosphorus levels similar to the Sun are considered more likely to host rocky planets with the potential to host life as we know it.

Stellar chemical compositions used as proxy for potentially habitable systems. A Southwest Research Institute scientist has identified stellar phosphorus as a probable marker in narrowing the search for life in the cosmos...

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Australian Telescope finds No Signs of Alien Technology in 10 Million Star Systems

Dipole antennas of the Murchison Widefield Array (MWA) radio telescope in Mid West Western Australia. Credit: Dragonfly Media.

A radio telescope in outback Western Australia has completed the deepest and broadest search at low frequencies for alien technologies, scanning a patch of sky known to include at least 10 million stars. Astronomers used the Murchison Widefield Array (MWA) telescope to explore hundreds of times more broadly than any previous search for extraterrestrial life.

The study, published today in Publications of the Astronomical Society of Australia, observed the sky around the Vela constellation. But in this part of the Universe at least, it appears other civilisations are elusive, if they exist.

The research was conducted by CSIRO astronomer Dr Chenoa Tremblay a...

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