The rare event quickly became an internet obsession. Looking into the disappearance can be complex, as separating facts from conspiracy theories can be tiring.
The obsession was a normal reaction to the unprecedented event. Modern airplanes don't simply disappear mid-air, but the MH370 also did not.
The plane's trajectory has been evident for years. Authorities have a clear image of the minutes before and hours after it disappeared from radars.
The plane disappeared from radars shortly after entering Vietnam's airspace. The pilots never checked in with Ho Chi Min.
However, satellite information from a British private firm tracked what could have been the plane for around six hours after that.
The airplane made a sharp U-turn, crossed over Malaysia again, went around Sumatra (Indonesia), and then turned south and flew over the Indian Ocean until it ran out of fuel.
The satellite and radar information was not conclusive at first because there was no way of knowing the detected object was the MH370.
That information is enough to understand what happened to the crew and passengers, as Malaysian and international authorities described a few weeks after the plane disappeared.