One day after the other!

[astroavani]

The large crater Petavius is one of the most impressive and interesting craters on our Moon. It undergoes great changes of appearance as the sun rises and changes its course in each lunation (orbit around Earth). The crater is 182 kilometers in diameter and about 2.1 kilometers deep. The central peaks are more than a kilometer in height.
The walls of the Petavius are abnormally large in relation to the diameter of the crater presenting a double border on the east and west sides. The east wall climbs about 11,000 feet. The crater appears oval rather than round, seen from Earth, but this is an illusion because of its proximity to the east (nascent) lunar.
The exact age of impact that formed Petavius is uncertain, but the crater is considered to have been formed during the Imbrium geological age of the Moon, or around 3.2-3.8 billion years ago.
One of the most prominent features about Petavius is Rimae Petavius, a fracture of approximately 50 miles in length, running straight from the central peaks to the southwest wall of the crater.
Petavius is located at 25.28 ° S, 60.63 ° E, and is of an unusual class of craters that have been modified by post-impact processes.
What process could have produced the system of fractures that cut the floor of this crater? Volcanism is the probable cause. There are small spots of basalt in the north and south on the crater floor, which help to cement this hypothesis. But unlike other craters that were totally filled by basalt spills, Petavius has only minor blemishes.
So why did Petavius end up with such an extensive system of fractures?
One hypothesis is that the fractures occurred as a result of volcanic modification that raised the floor of the crater, this would occur if the magma intruded under the floor and pushed the floor up.
But because Petavius was not completely flooded and why fractures were never covered by basalt.
It is possible that Petavius did not witness the same style of eruption as elsewhere on the Moon. Or perhaps the magma beneath Petavius crater was not liquid enough to completely flood the surface. Finally, it may simply be that the source region of the magma was relatively small, and thus only a modest amount of basalt erupted.

Source: The Astronomical Society of Palm Beachs
Lunar Pioneer / LROC
Adaptation: Avaní Soares
Http://www.astrobin.com/full/294504/0/?nc=user

[Mr Spock]

Nice comparison. The lighting certainly makes a huge difference to its appearence.

[michael.h.f.wilkinson]

Very nice comparison. Petavius is one of my favourite craters

[laudropb]

Very nice comparison Avani. By coincidence I have been observing this area for the last few nights and the incidence of the sunlight really does make a huge difference.

[Dave In Vermont]

A wonderful play of 'light & shadow' well captured, Avani!

You've got the 'eye' of an artist in your images.

Thank you -

Dave

[astroavani]

Thanks for comments!

 

[Ruud]

Never a dull day on the Moon, and although it is always familiar, it never looks the same.

Great work, Avani!