Nombre total de pages vues

13/03/2019

Science & Technology - Astronomy picture of the day : Highlights of the North Spring Sky

2019 March 13
See Explanation.  Clicking on the picture will download
 the highest resolution version available.
Highlights of the North Spring Sky 
Image Credit & Copyright: Universe2go.com

Explanation: What can you see in the night sky this season? The featured graphic gives a few highlights for Earth's northern hemisphere. Viewed as a clock face centered at the bottom, early (northern) spring sky events fan out toward the left, while late spring events are projected toward the right. Objects relatively close to Earth are illustrated, in general, as nearer to the cartoon figure with the telescope at the bottom center -- although almost everything pictured can be seen without a telescope. As happens during any season, constellations appear the same year to year, and, as usual, the Lyrids meteor shower will peak in mid-April. Also as usual, the International Space Station (ISS) can be seen, at times, as a bright spot drifting across the sky after sunset. After the Vernal Equinox next week, the length of daytime will be greater than the length of nighttime in Earth's northern hemisphere, an inequality that will escalate as thespring season develops. Also as spring ages, Jupiter becomes visible increasingly earlier in the night. As spring draws to a close, the month of May will feature two full moons, the second of which is called a Blue Moon.

ASTRONOMIE - Collision entre deux planètes naines

Que se passe- t -il quand deux astres de la taille de Pluton entrent en collision ? Cette vue d'artiste reflète l'ampleur du phéno...