| | October 17
Venus Passages | | | |
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Venus in the daytime sky, shown over a span of days, around the time the planet passes near the sun at inferior conjunction on October 26. Illustration by Guy Ottewell. View more like this. | | | Good morning!
Venus passages compared | | | Venus will leave the evening sky - sweeping nearest the sun as seen from Earth - on October 26. Astronomer Guy Ottewell uses his great skill at illustration to compare this passage of Venus with the last one and the next one. Read more. | | | | | | Asteroid 2018 EB has a moon | | | Binary asteroids - that is, asteroids with moons - aren't uncommon. More than 300 have been discovered so far. Astronomers found a moon for 2018 EB when it swept closest to Earth on October 7. Read more. | | | | New species of giant dinosaur identified | | The fossils of Ledumahadi mafube suggest that it was the largest land animal alive 200 million years ago. Read more.
 The enormous plant-eating Ledumahadi mafube was about twice the size of a large African elephant. Image via Wits University. | | | | | |
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|  | | | Bright star Deneb transits at nightfall | | This beloved Summer Triangle star is shifting westward in our sky. Its transit at nightfall in mid-October is a hallmark of the year, marking a shift toward winter - or summer - on your half of the globe. Read more. | | | | | |
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 | | | Tonight and tomorrow night … Moon and Mars | | If you see the moon and Mars on these nights, you might notice a bright star nearby. It's Fomalhaut in the constellation Piscis Austrinus, the Southern Fish. | | |
