Cometary Globule L1622 (Subaru-DSS Composite) by Robert Gendler
Bright rimmed globules and their more evolved cousin, the cometary globule, represent fascinating dynamic structures formed by the interplay of cold molecular clouds and hot ionizing stars.
Typically the head of the globule faces a hot O-type star. Intense radiation from the star boils away lower density gas from the head. The evaporated rim of gas becomes ionized by the stars ultraviolet flux forming a bright glowing rim we associate with many of these globules like LDN 1622 (Beverly Lynds’ Dark Nebulae Catalog) .
The Orion superbubble contains dozens of Cometary Globules illuminated by OB stars within the Orion OB1 association. L1622 is superimposed on the northern part of Barnard’s Loop at the northeastern periphery of the Orion B molecular cloud. LDN 1622 is actively forming young stars.The most conspicuous YSO (Young Stellar Object) in LDN 1622 is HBC 515, located at the head of the cometary cloud facing the Orion OB1 association.
A prominent reflection nebula opens toward the southwest. There are also several faint Herbig-Haro objects north and west of HBC 515.
December 11, 1941: Germany and Italy Declare War on the U.S.
On this day in 1941, Nazi Germany’s Adolf Hitler and Fascist Italy’s Benito Mussolini declared war on the United States in support of their ally, Empire of Japan. The U.S. government responded by passing resolutions of war against the two Axis powers, thereby entering World War II.
The declarations came a few days after the Japanese attack and bombing of the U.S. naval base at Pearl Harbor near Honolulu, Hawaii.
Follow Ken Burns’s World War II timeline to discover important events and figures during this global conflict.
Photo: President Roosevelt signing the declaration of war against Germany, Dec. 11, 1941 (Library of Congress).
A new cohort of young women—members of the so-called Millennial generation—has been entering the workforce for the past decade. At the starting line of their careers, they are better educated than their mothers and grandmothers had been—or than their young male counterparts are now. But when they look ahead, they see roadblocks to their success.
By the Numbers: The Incredibly Shrinking American Middle Class | Smart Charts, What Matters Today | BillMoyers.com
The income range to be considered middle class:$25,500 – $76,500
Year inflation-adjusted median household income peaked at $56,080: 1999
Percent increase in productivity from 1979 to 2012: 75
What the median middle-class income ($51,017) would be if wages grew at the same rate: $77,131
(Check out this handy tool from EPI to see what your income would be if it had kept up with productivity.)
Number of guaranteed days of paid vacation given to U.S. workers: 0
Number of vacation days U.S. workers are entitled to, but don’t take, in a typical year: 175 million
Number of industrialized countries that do not mandate paid maternity leave: 1
(yes, the U.S. is the only one that does not require paid leave.)
Percentage of Americans near retirement with less than $30,000 in their retirement accounts: 75
Percentage increase in housing prices since 1990: 56
Share of Americans that do not have enough money saved to pay their bills for six months: 3/4
Percentage of income gains captured by the top 1 percent in the first three years of the economic recovery: 95
Average income of top 1 percent:$1.2 million
Average net worth of the top 1 percent:$16.4 million
The share of wealth held by the richest 400 Americans: 1/2
Percentage of the 1 percenters who said they were “middle class at heart”:76
The total number of Americans living in poverty — with incomes of $23,492 for a family of four or $11,720 for an individual:46.5 million