**Astronomy Picture of the Day**

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Kind-1 (TextNote)

2026-03-15T04:06:43Z

Astronomy Picture of the Day

15 March 2026

A Year for K2-315b

https://apod.nasa.gov/apod/image/2603/MIT-Pi-Planet-01-PRESS1024.jpg

Image Credit: Not provided

Explanation:

Want to visit a planet that has 3.14 days in a year?

Then plan a trip to K2-315b, an earth-sized planet orbiting around a cool, red, M dwarf star about once every 3.14 days.

The exoplanet's discovery, based on publicly available data from the planet-hunting Kepler Space Telescope's extended K2 mission, was announced in 2020.

K2-315b's measured orbital period in days is nearly equal to the extremely popular irrational number Pi.

That puts the exoplanet so close to its parent star that its surface is likely very warm, baking-hot in fact.

And this Pi planet is over 185 light-years away.

So instead of trying to arrange for an interstellar vacation to K2-315b, there may be easier and more comfortable ways for you to celebrate Pi day on planet Earth.

#APOD #K2 #exoplanet #exoplanets #planetaryscience #K2mission

https://apod.nasa.gov/apod/ap260314.html

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  "content": "**Astronomy Picture of the Day**\n\n15 March 2026\n\n**A Year for K2-315b**\n\nhttps://apod.nasa.gov/apod/image/2603/MIT-Pi-Planet-01-PRESS1024.jpg\n\nImage Credit: Not provided\n\nExplanation:  \n\nWant to visit a planet that has 3.14 days in a year?\n\nThen plan a trip to K2-315b, an earth-sized planet orbiting around\na cool, red, M dwarf star about once every 3.14 days.\n\nThe exoplanet's discovery,\nbased on publicly available data\nfrom the planet-hunting\nKepler Space Telescope's\nextended K2 mission, was announced in 2020.\n\nK2-315b's measured orbital period in days is nearly equal to the\nextremely\npopular irrational\nnumber Pi.\n\nThat\nputs\nthe exoplanet so close to its parent star that its\nsurface is likely very warm,\nbaking-hot in fact.\n\nAnd this Pi planet is over 185 light-years away.\n\nSo instead of trying to arrange for an\ninterstellar vacation\nto K2-315b, there may be easier and more comfortable ways for you to celebrate\nPi day on planet Earth.\n\n#APOD #K2 #exoplanet #exoplanets #planetaryscience #K2mission\n\nhttps://apod.nasa.gov/apod/ap260314.html\n",
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