Astronomy is a natural science. It is the study of everything outside the atmosphere of Earth. It studies celestial objects (such as stars, galaxies, planets, moons, asteroids, comets and nebulae) and processes (such as supernovae explosions, gamma ray bursts, and cosmic microwave background radiation).
Definition. EBITDA Margin (TTM) is trailing twelve month earnings before interest, taxes, depreciation and amortization divided by trailing twelve month net sales. EBITDA Margin (Quarterly) is the specified Quarter earnings before interest, taxes, depreciation and amortization divided by Quarter sales.
Supporters of EBITDA as a measure argue that it is a good approximation for operating cash flow because it adds back depreciation and amortization, which are often major non-cash items. The company has managed in three years to boost sales by nearly 400 percent while dramatically increasing both EBITDA and owners' compensation. EBITDA is the amount of profit that a person or company receives before interest, taxes, depreciation, and amortization have been deducted.