| Question |
Answer |
| 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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