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If a Star Has Less Metals, it Might Have a Better Chance to Spark Life

In the hunt for habitable worlds around other stars, planetary atmospheres provide fertile places to look. But, as a group of scientists at the Max-Planck Institute for Solar System Studies in Germany found, maybe astronomers should focus on a star’s metallicity, too. That’s because there seems to be a direct link between their metallicity, how …

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Prelude to a Supernova: The James Webb Captures a Rare Wolf-Rayet Star

Massive stars are sprinters. It might seem counterintuitive that stars 100 or 200 times more massive than our Sun could only survive for as few as 10 million years. Especially since smaller stars like our Sun can last 10 billion years. Massive stars have huge reservoirs of hydrogen to burn through, but their massive size …

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Venus is Like an Exoplanet that’s Right Next Door

We’re lucky to have a neighbour like Venus, even though it’s totally inhospitable, wildly different from the other rocky planets, and difficult to study. Its thick atmosphere obscures its surface, and only powerful radar can penetrate it. Its extreme atmospheric pressure and high temperatures are barriers to landers or rovers. It’s like having a mysterious …

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The Planet That Shouldn’t Exist

As of this writing, almost 5300 exoplanets spanning approximately 4000 planetary systems have been confirmed to exist in our universe. With each new exoplanet discovery, scientists continue to learn more about planetary formation and evolution that has already shaken our understanding of this process down to its very core. One such example is “Hot Jupiters”, …

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This Exoplanet Orbits Around its Star’s Poles

In 1992, humanity’s effort to understand the Universe took a significant step forward. That’s when astronomers discovered the first exoplanets. They’re named Poltergeist (Noisy Ghost) and Phobetor (Frightener), and they orbit a pulsar about 2300 light-years away. Even though we thought there must be other planets around other stars, and entire science fiction franchises were …

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How Can We Know if We’re Looking at Habitable exo-Earths or Hellish exo-Venuses?

The differences between Earth and Venus are obvious to us. One is radiant with life and adorned with glittering seas, and the other is a scorching, glowering hellhole, its volcanic surface shrouded by thick clouds and visible only with radar. But the difference wasn’t always clear. In fact, we used to call Venus Earth’s sister …

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The Outer Solar System Supplied a Surprising Amount of Earth’s Water

In a recent study published in Science, a team of researchers at Imperial College London examined 18 meteorites containing the volatile element zinc to help determine their origin, as it has been long hypothesized that Earth’s volatiles materials, including water, were derived from asteroids closer to our home planet. However, their results potentially indicate a …

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