Date in year · 2015 · The 2010s

September 14, 2015

On September 14, 2015, the first observation of gravitational waves is made, announced by the LIGO and Virgo collaborations on 11 February 2016. The year's #1 song was "Uptown Funk" by Mark Ronson featuring Bruno Mars. Princess Charlotte of Wales, Princess Charlotte of Wales, Princess Charlotte of Wales would arrive in the same year.

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2015

2010s

Around 2015

The year in brief

2015 (MMXV) was a common year starting on Thursday of the Gregorian calendar, the 2015th year of the Common Era (CE) and Anno Domini (AD) designations, the 15th year of the 3rd millennium and the 21st century, and the 6th year of the 2010s decade.

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What happened

On September 14, 2015

  1. 2015 The first observation of gravitational waves is made, announced by the LIGO and Virgo collaborations on 11 February 2016.

    2015 detection made by LIGO interferometers

    The first direct observation of gravitational waves was made on 14 September 2015 and was announced by the LIGO and Virgo collaborations on 11 February 2016. Previously, gravitational waves had been inferred only indirectly, via their effect on the timing of pulsars in binary star systems. The waveform, detected by both LIGO observatories, matched the predictions of general relativity for a gravitational wave emanating from the inward spiral and merger of two black holes and the subsequent ringdown of a single, 62 M☉ black hole remnant.

Farewells

Died on September 14, 2015

Davey Browne Australian boxer
Fred DeLuca American businessman (1947–2015)
Martin Kearns Musical artist
Corneliu Vadim Tudor Romanian politician, poet and writer (1949–2015)

Elsewhere that year

Other moments from 2015

The class of 2015

Others born in 2015

Princess Charlotte of Wales 2015– British royal, and third in line to the British throne
Princess Charlotte of Wales 2015– British royal, and third in line to the British throne
Princess Charlotte of Wales 2015– British royal, and third in line to the British throne
Princess Charlotte of Wales 2015– British royal, and third in line to the British throne

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