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Home / Explore / Experiences / RASC Observatory / Astronomy Info & Events: April

Astronomy Info & Events: April

Moon Phases

April 5: New Moon

April 12: First Quarter Moon

April 19: Full Moon (Pink Moon)

April 26: Last Quarter Moon

Special Events

International Space Station (ISS) Observable Passes

Look for passes of the ISS in the early evening sky from April 1 to 7, with the ISS always moving from west to east. Exact times of these passages for your location can be found by visiting the website heavens-above.com or by using satellite tracking smart phone apps like Sputnik.

April 8: Royal Astronomical Society of Canada (RASC) Edmonton Centre meeting

  • 7:30 – 9:30 p.m. in the Zeidler Dome at the TELUS World of Science. Free to attend. See edmontonrasc.com for more details.

April 8: NASA astronaut Nick Hague and Canadian Space Agency astronaut David Saint-Jacques will take a 7-hour spacewalk outside the International Space Station. NASA TV will begin airing live coverage at 4:30 a.m. MDT.

April 10: New Zeidler Dome show “Legends of the Northern Sky” begins!

April 17: A Northrop Grumman Antares rocket will launch a Cygnus cargo spacecraft to the International Space Station from Wallops Island, Virginia, at 2:45 p.m. MD.

April 18: Venus at aphelion

April 19: Good Friday

April 21: Easter Sunday

April 22: Lyrid meteor shower peaks

April 25: Saturn near waning gibbous Moon

April 25: A SpaceX Falcon 9 rocket will launch the Dragon CRS-17 cargo mission to the International Space Station from Cape Canaveral Air Force Station in Florida, at 4:15 a.m. MDT.


Visible Planets

Mercury is not easily seen this month from our latitude as it is lost in the glare of the rising Sun along the eastern horizon. Observers in more southerly latitudes will have a better view of Mercury this month as it reaches its greatest elongation west (found 28 degrees west of the Sun) on April 11.

Venus is found very low along the eastern horizon before sunrise. It gains a little elevation in the eastern dawn sky during the month but it also dims in appearance as it dips around the Sun. When viewed through a telescope Venus appears as a gibbous object.

Mars is found low in the western sky after sunset and is located in the constellation of Taurus, the bull. Look for Mars near the bright red star, Aldebaran (the eye of Taurus). The waxing crescent Moon will be found near Mars on the evenings of April 8 and 9.

Jupiter is located in the constellation of Serpens Cauda (part of Ophiuchus), the tail of the serpent, and is seen rising in the early predawn hours along the southeastern horizon. By sunrise, Jupiter stands about 14 degrees above the southern horizon. On the morning of April 23 look for Jupiter near the waning gibbous Moon. On April 10 Jupiter reaches its first stationary point and, then for the next few months, describes retrograde motion in the sky reaching its point of opposition on June 10.

Saturn appears low above the southeastern horizon before sunrise during this month and is located in the constellation of Sagittarius, the archer. The waning gibbous Moon can be seen near Saturn before sunrise on April 25.

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