Princeton University develops cold-spectrum instruments to directly observe exoplanets

According to Engadget UK, astronomers will soon be able to directly observe exoplanets. Usually, astronomers need to study the exoplanet by means of roundabouts, such as when a planet passes in front of the planet to observe a decrease in the amount of light. Princeton University-led research teams have successfully tested CHARIS, a supercooled spectroscopy instrument that isolates reflected light from Jupiter's exoplanets to analyze the planet's age, mass, and temperature. The core of this technology is that it uses a corona that effectively distinguishes between planetary light and main starlight.

However, CHARIS has a limited field of view (the entire Neptune cannot be observed after testing), so it is more suitable for targeted observations than for large-scale observations. CHARIS is also not suitable for observing gaseous giant planets (such as Saturn, Jupiter), but these planets are not suitable for human habitation. CHARIS will be used in the Pleiades Telescope in February 2017. By then, scientists will have a reliable and direct way to observe larger exoplanets, not just confirm their existence.

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