| | April 30 Preparing for Asteroid Apophis | | | |
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| Preparing for asteroid Apophis | | Astronomers are meeting today at the Planetary Defense Conference to discuss plans to observe asteroid 99942 Apophis, a relatively large asteroid that'll sweep past Earth safely - but rather closely - in 2029. Read more. | | | | | | | |
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| | | Before sunup this week … Northern Hemisphere | Will you catch the pair tomorrow morning? If you do, you'll find they're very beautiful. Read more. | | | | |
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| | Before sunup this week … Southern Hemisphere | The Southern Hemisphere has the advantage for catching the moon, Venus and Mercury in the coming mornings. From there, they appear more directly above the sunrise. Read more. | | |