![]() Over time, it’s grown increasingly rich now it delivers one to two a minute. But the Geminids were unseen as recently as the mid‑1800s, when it started as a modest shower that delivered only 20 meteors per hour. All other major meteor showers have been observed for centuries or millennia. Strangely, Geminid meteors are twice as dense, yet nonetheless too lightweight to be bonafide, metal-stone asteroid material. All other showers are debris from comets, skimpy stuff less dense than ice.
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