In a fresh twist, the discovery marks the first time powerful X-rays have been associated with an object that might be a long-period transient. Astronomers first spotted this cryptic new class of ...

In a fresh twist, the discovery marks the first time powerful X-rays have been associated with an object that might be a long-period transient. Astronomers first spotted this cryptic new class of ...

Definition: First Class Life is a categorical term present in the classification of life insurance risk. It denotes low life risk. Description: First class life comes under low risk category of life ...