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Evidence for Milky Way's Long-Theorized Stellar Graveyard Found

Astronomers have known for several years that a supermassive black hole called Sagittarius A* resides at the center of the Milky Way galaxy. New data indicate that a swarm of smaller black holes that have accumulated over billions of years may surround it. The findings suggest that the smaller black holes will eventually fall into Sagittarius A*, elucidating how such behemoths grow.

Ç] 3 How Geckos Keep Their Sticky Feet Clean

* Gecko lizards can cling easily to nearly any surface, thanks to their extraordinarily adhesive feet. In fact, a single toe can support the animal's entire body weight. Now researchers have figured out just how the gecko's feet stay clean.

Renewable Energy

Renewable Energy

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable.

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