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How do astronomers know that the newly found L and T spectral types represent objects cooler than M spectral class
Volunteers Database
A digital repository designed to store and manage information regarding individuals who offer their time and skills for free to support a cause or organization.
Sales Table
A structured arrangement of sales data in rows and columns that is used to analyze, organize, and track sales transactions over a period.
Customers Table
A structured set of data held in a database or spreadsheet, specifically designed to manage information about customers.
Right Outer Join
A SQL operation that returns all records from the right table and the matched records from the left table, with NULL values in the result where there are no matches.
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Q38: What evidence indicates protostars have formed<br>A)jets<br>B)bipolar outflows<br>C)protostellar
Q55: Protostars are in hydrostatic equilibrium.
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Q140: On the H-R diagram, cool and bright