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Astrophysics

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Scientists have calculated the temperature of deep space with this device.   Ground-based microwave radio telescope  
The lightest element.   Hydrogen  
The second-lightest element.   Helium  
The third-lightest element.   Lithium  
Clouds of gas/dust in space that reflect and absorb light from stars.   Nebulae  
Collection of small grains of matter; can coalesce into large bodies such as planets, moons and asteroids.   Planetesimal  
All matter and energy originated from this immensely small, hot and dense particle.   Singularity  
An exploding star.   Supernova  
The oldest solid material found on Earth so far.   Zircon crystal  


   


 

 

 

 

 

 
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