A galactic merger. located 45 million light-years from the milky way, the antenna galaxies are locked in a deadly embrace. once normal, separate spiral galaxies, the pair have spent the last few hundred years sparring with with one another. the interaction is so violent that stars have been ripped from their host galaxies to form a streaming arc between the two. this is likely the future of our milky way when it collides with the andromeda galaxy.
photo credit: hubble space telescope, nasa
All right! i got some video of the current rolling ball sculpture commission in action for everyone who has been so patiently waiting. i shot both closeups and overall so you could get the total effect. it’s coming along, but i need to ramp up the pace a little. i’m pleased with the progress so far, though, and looking forward to more tomorrow!
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#today#edmond_becquerel#solar_cell on 24th march 1820, edmond becquerel was born. he was a french physicist. he is credited with the discovery of the photovoltaic effect, the operating principle of the solar cell, in 1839. he is also known for his work in luminescence and phosphorescence. in 1839, at age 19, experimenting in his father's laboratory, becquerel created the world's first photovoltaic cell. in this experiment, silver chloride was placed in an acidic solution and illuminated while connected to platinum electrodes, generating voltage and current. because of this work, the photovoltaic effect has also been known as the "becquerel effect".