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.
Earnings before interest, taxes, depreciation, and amortization are commonly shortened to EBITDA. EBITDA reports a company's profits before interest on debt and taxes owed or paid to the government are subtracted. EBITDA is used to compare the profitability of a company with other companies of the same size in the same industry but which may have different levels of debt or different tax situations.