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Astronomers observe unobscured X-rays generated in active galactic nuclei.
Gross Earnings
The total amount of money earned by an individual or corporation before any deductions are taken out.
Medicare Withholding
The portion of a U.S. employee's paycheck that is automatically deducted and contributed to the Medicare program.
Social Security Withholding
The process by which employers deduct a portion of an employee's salary to contribute to the Social Security program.
Federal Income Tax Withholding
The amount of federal income tax withheld from an employee's paycheck, based on their earnings and tax filing status.
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Q110: Henrietta Leavitt's period-luminosity relation for _ indicates