Two reasons why it's unavailable (for now): first, BPM 37093 is a star about to die, and we're talking about its cristallized carbon nucleus. Second, it's 50 light years away from earth.
Calcite crystals occasionally show phosphorescence or fluorescence, but they are also display birefringence (or double refraction). This strong birefringence causes objects viewed through a clear piece of calcite to appear doubled!
The flower-like pattern is made of celestite and calcium deposits, on black limestone
They are less than 2.0 mm and were found in Eifel, Palatinate, Germany
They are formed by the stretching of molten basaltic glass from lava, and named after the Hawaiian goddess of volcanoes
Its name is a combination of the first letters of the names Armstrong, Aldrin and Collins. It was first brought back in 1969 from Tranquility Base on the Moon.
Located in the Appalachians (North America), the New River is estimated to be 260 to 325 million years old
The red color we often see is mostly coming from dust in its atmosphere
crystal, macrophotography, chemical compounds, mineral, Earth, beauty
An estimated 560,000 to 1,400,000 barrels of oil leak into the Gulf of Mexico each year, from natural sources. Fortunately, most of this oil is degraded by oil-eating bacteria
Angmar, Dolmed, Doom, Erebor, Misty or Moria Montes... Saturn's moon also harbours small hills (or colles) named after J.R.R. Tolkien's characters, such as Bilbo, Gandalf or Faramir
It is the biggest pink diamond ever found in Australia and it was originally weighing 12.76 carats (2.552 g)