The glow of the Milky Way -- our galaxy seen edgewise -- arcs across a sea of stars in a new mosaic of the southern sky produced from a year of observations by NASA's Transiting Exoplanet Survey Satellite (TESS). Constructed from 208...

WS EXT Masjid-i ShahMasjid-i Shah in Isfahan (Esfahan) Dome of mosque w/ glazed tile mosaic (1612-37 Safavids dynasty art) / Praying Muslims / Seated Shia Islamic cleric Ayatollah Kashani talking (no SOT)

This guided tour of the area surrounding McMurdo Station in Antarctica uses the Landsat Image Mosaic of Antarctica (LIMA). It's a great way to experience the frozen continent without any risk of frostbite.<br/>

The plasma membrane is responsible for maintaining a balance. In this section, I talk about both the structure and the function of the plasma membrane. I deal with the components of the plasma membrane and their functions.

Thanks to Franklin D. Roosevelt’s ambitious New Deal plan, American artists were able to keep working during the Great Depression. The work they produced remains a key part of the American landscape.

The Cathedral of Santa Maria Assunta (Cattedrale di Santa Maria Assunta) is a basilica church on the island of Torcello, Venice, northern Italy. It is a notable example of Venetian-Byzantine architecture, one of the most ancient...

Over the years, the Hubble Space Telescope has taken hundreds of images of different kinds of incredible nebulae in our universe.
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A nebula is a giant cloud of dust and gas in space. There are...

We each have between 30 and 40 trillion cells in our body. With each cell containing our DNA, special cell machinery and the nutrients to keep our cells and us alive. But you may not have given much thought for the special protective...