Pluto discovered at Lowell Observatory

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  • Pluto discovered at Lowell Observatory
    Pluto discovered at Lowell Observatory
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Thursday, February 18

The 49th day of the year 316 days left

Today in History

On this day in 1930, Pluto, once believed to be the ninth planet, is discovered at the Lowell Observatory in Flagstaff, Arizona, by astronomer Clyde W. Tombaugh.

The existence of an unknown ninth planet was first proposed by Percival Lowell, who theorized that wobbles in the orbits of Uranus and Neptune were caused by the gravitational pull of an unknown planetary body. Lowell calculated the approximate location of the hypothesized ninth planet and searched for more than a decade without success. However, in 1929, using the calculations of Lowell and W.H. Pickering as a guide, the search for Pluto was resumed at the Lowell Observatory in Arizona. On February 18, 1930, Tombaugh discovered the tiny, distant planet by use of a new astronomic technique of photographic plates combined with a blink microscope. His finding was confirmed by several other astronomers, and on March 13, 1930—the anniversary of Lowell’s birth and of William Herschel’s discovery of Uranus—the discovery of Pluto was publicly announced.

Weather At 7:22 a.m. Thursday 7°

Last 24 hours: High 22° Low 5°

Yesterday High 13° Low -13°

30 Years Ago Today High 60° Low 42°

50 Years Ago Today High 68° Low 58°

Extremes This Date High 74° in 2011 Low -8° in 1936

Moisture Received Last 24 hours 0.00”

Total for Month 3.77”

Average for Month 2.21”

Last precipitation February 17 3.50”

Driest February 1963 0.07”

Wettest February 1985 7.87”

Wednesday, February 17

The 48th day of the year 317 days left

Today in History

With the words, “Hello! This is New York calling,” the U.S. Voice of America (VOA) begins its first radio broadcasts to the Soviet Union on this day in 1947. The VOA effort was an important part of America’s propaganda campaign against the Soviet Union during the Cold War.

The VOA began in 1942 as a radio program designed to explain America’s policies during World War II and to bolster the morale of its allies throughout Europe, Asia, the Middle East, and Africa. After the war, VOA continued as part of America’s Cold War propaganda arsenal and was primarily directed toward the western European audience. In February 1947, VOA began its first Russian-language broadcasts into the Soviet Union. The initial broadcast explained that VOA was going to “give listeners in the USSR a picture of life in America.” News stories, human-interest features, and music comprised the bulk of the programming. The purpose was to give the Russian audience the “pure and unadulterated truth” about life outside the USSR. Voice of America hoped that this would “broaden the bases of understanding and friendship between the Russian and American people.”

Weather At 7:20 a.m.

Wednesday 13°

Last 24 hours: High 13° Low -13°

Yesterday High 2° Low -14°

30 Years Ago Today High 49° Low 22°

50 Years Ago Today High 75° Low 28°

Extremes This Date High 75° in 1971 Low -6° in 1900

Moisture Received Last 24 hours 3.50”

Total for Month 3.77”

Average for Month 2.21”

Last precipitation February 17 3.50”

Driest February 1963 0.07”

Wettest February 1985 7.87”

Tuesday, February 16

The 47th day of the year 318 days left

Weather At 7 a.m. Tuesday -13°

Last 24 hours: High 2° Low -14°

Yesterday High 4° Low -4°

30 Years Ago Today High 31° Low 16°

50 Years Ago Today High 67° Low 39°

Extremes This Date High 78° in 1911 Low -1° in 1979

Moisture Received Last 24 hours 0.06”

Total for Month 0.27”

Average for Month 2.21”

Last precipitation February 16 0.06”

Driest February 1963 0.07”

Wettest February

1985 7.87”

Monday, February 15

The 46th day of the year 319 days left

Weather At 7:15 a.m. Monday -3°

Last 24 hours: High 4° Low -4°

Yesterday High 15° Low 0°

30 Years Ago Today High 46° Low 17°

50 Years Ago Today High 57° Low 25°

Extremes This Date High 76° in 1911 Low -9° in 1905

Moisture Received Last 24 hours 0.06”

Total for Month 0.21”

Average for Month 2.21”

Last precipitation February 15 0.06”

Driest February 1963 0.07”

Wettest February 1985 7.87”

Sunday, February 14

The 45th day of the year 320 days left

Weather At 7:15 a.m. Sunday 0°

Last 24 hours: High 15° Low 0°

Yesterday High 14° Low 4°

30 Years Ago Today High 60° Low 36 ° 50 Years Ago Today

50 Years Ago Today High 52° Low 25°

Extremes This Date High 75° in 1954 Low -4° in 1905

Moisture Received Last 24 hours 0.02”

Total for Month 0.15”

Average for Month 2.21” Last precipitation

Last precipitation February 14 0.02”

Driest February 1963 0.07”

Wettest February 1985 7.87”

Saturday, February 13

The 44th day of the year 321 days left

Weather At 7:05 a.m. Saturday 4°

Last 24 hours: High 14° Low 4°

Yesterday High 16° Low 10°

30 Years Ago Today High 70° Low 40°

50 Years Ago Today High 34° Low 15°

Extremes This Date High 81° in 1962 Low -28° in 1905

Moisture Received Last 24 hours 0.00”

Total for Month 0.13”

Average for Month 2.21”

Last precipitation February 10 0.13”

Driest February 1963 0.07”

Wettest February 1985 7.87”