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mike dennler on Unsplash

NASA Astronomy Picture of the Day:

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.

Fishermen fishing in the chars (shifting sediment islands) of the river Padma in Rajshahi District, Bangladesh. The chars are being frequently visible as the river is drying up. Today is the International Day of Action for Rivers.

Asker Ibne Firoz, CC BY-SA 4.0, via Wikimedia Commons. View source.

Pi Day π (pi) is observed on March 14 (3/14 in the month/day format) since 3, 1, and 4 are the first three significant digits of π.
Pi (π) Day has become an international holiday, celebrated live and online all around the world. 

What is pi anyway? Divide any circle’s circumference by its diameter; the answer (whether for a plate or a planet) is always approximately 3.14, a number represented with the Greek letter π. Mathematicians have been calculating π’s digits with more and more accuracy and have discover they go on literally forever, with no pattern.

Loren Gu on Unsplash

NASA Astronomy Picture of the Day:

In this composited night skyscape, stacked exposures trace graceful star trails above Lake Toolondo, Victoria, Australia, planet Earth. Captured while the lunar eclipse of March 3 was in progress, the exposures used were made during the hour-long total eclipse phase. So faint star trails are easily visible along with the trail of the reddened Moon in the eclipse-darkened skies above the lake and trees. Of course, the apparent motion of Moon and stars revealed in the timelapse composite reflect the Earth's daily rotation around its axis. Dramatically punctuating the Moon's trail as totality ended, a single, separate telephoto image of the totally eclipsed Moon was scaled and blended into the scene. Growing Gallery: Total Lunar Eclipse of March 3

Photo by Jason Perry

Arthur Ashe (1943 - 1993) American professional tennis player who won three Grand Slam titles

Jonathan Gallegos on Unsplash

Delleboersterheide, nature reserve of the It Fryske Gea. Scots pine (Pinus sylvestris) on an overgrown heathland.

Agnes Monkelbaan, CC BY-SA 4.0, via Wikimedia Commons. View source.