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, or EBITDA, is one measure of a company's operating efficiency. EBITDA is a way to measure profits without having to consider other factors such as financing costs (interest), accounting practices (depreciation and amortization) and tax tables.