Knowing that the key to the longevity of Gripen would be its platform-the initial technology on which the plane is based-the conceptual designers made it open architecture. I am part of a team that is developing a product that is regularly enhanced to keep it at its best over 40 years.” Key to longevity - Adaptable, open architecture It is designed to remain at the forefront of capabilities for decades. “How many people drive a car that is more than 15 years old?”, asks Knut Övrebö, Chief Engineer at Future Air Systems, Saab business area Aeronautics. For Gripen that's not a problem since that way of thinking is in the DNA of Gripen from the beginning. That means they need to adapt to each significant new technology and threat that comes along to change the way a fighter jet operates. On that night, the moon is waning gibbous and 98-percent illuminated and so will hinder observations.įollow All Space Considered and Griffith Observatory on Facebook, Instagram, YouTube, and Twitter for updates on astronomy and space-related events.Because fighters represent an extensive investment for governments, it is vital that they remain effective and operationally competitive throughout their entire time in service. The peak occurs from the evening of the 5 th to the morning of the 6 th. The meteors are swift with a high percentage of persistent trains but few fireballs. From the northern hemisphere, it usually produces medium rates of 10 to 30 meteors per hour just before dawn. The shower is best seen from the southern hemisphere. They are named for the star in Aquarius the Water Bearer from which they appear to originate. The eta Aquariid meteor shower occurs from the night of April 19 through May 28. A magnification of 150x is needed to see its 2.2-arcsecond wide disk.įull moon occurs on the 5 th, last quarter on the 12 th, new moon on the 19 th, and first quarter on the 27 th. On the 15 th, Neptune is at Right Ascension 23 h 51 m 17 s and declination -2° 14ʹ 48ʺ. On the 31 st, Neptune rises at 2:15 a.m., PDT. On the 1 st, the planet rises at 4:11 a.m., PDT, and is east-southeast. On the 31 st, Uranus rises at 4:38 a.m., PDT, an hour before the sun rises, and so for the month of May the planet is not observable. On the 1 st, Uranus sets at 8:10 p.m., PDT, only 33 minutes after the sun sets. A magnification of 50x is needed to see the rings and Saturn’s largest moon Titan. On the 1 st, the planet rises in the southeast at 3:15 a.m., PDT, and on the 31 st, the planet rises at 1:22 a.m., PDT. A magnification of 50x will show the Red Spot, and the four bright Galilean moons may be seen moving back and forth, roughly in a line centered on Jupiter. On the 31 st, Jupiter rises at 3:50 a.m., PDT. On the 1 st, Jupiter rises due east at 5:28 a.m., PDT, and the sun rises 36 minutes later. Jupiter moves from Pisces the Fishes to Aries the Ram on the 19 th. This can be observed with the unaided eye from a dark site, or with binoculars or a small telescope from an urban site. From June 1 to June 2 Mars is a degree west of the large star cluster M44. A magnification of 200x is needed to see the planet’s small disk. On the 31 st, Mars sets at 11:53 p.m., PDT, and is 93-percent illuminated and 4.7 arcseconds wide. The planet sets at 12:54 a.m., PDT, and is 91-percent illuminated and 5.4 arcseconds wide. On the 1 st, Mars is due west and two-thirds of the way up from the horizon. Mars crosses from Gemini the Twins to Cancer the Crab on the 16 h. Venus continues to increase in brightness and width and to decrease in the percentage of its disk that is illuminated. On the 31 st, the sun sets at 7:59 p.m., PDT, and Venus sets at 11:21 p.m., PDT, and is 52-percent illuminated and 23 arcseconds wide. Venus is 66-percent illuminated and 17 arcseconds wide. On the 1 st, the sun sets at 7:37 p.m., PDT, and Venus sets at 11:07 p.m., PDT. Venus is due west and about a third of the way above the horizon after sunset. Do not observe any planet when it comes close to the sun, for the danger to the eyes is great. Mercury is 43-percent illuminated and only eight arcseconds wide. The planet rises just north of east and stays close to the horizon. On the 31 st, Mercury rises at 4:35 a.m., PDT, and the sun rises at 5:43 a.m., PDT, 68 minutes later. On the 29 th, Mercury reaches greatest western elongation, 25 degrees west of the sun. Mercury rises due east at 6:04 a.m., PDT, and the sun rises at the same time on the 1 st, and so the planet is not observable. Here are the events happening in the sky of southern California. This is the Griffith Observatory Sky Report for the period between May 1 and May 31, 2023.
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