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Sri Lanka Planetarium

56 years of operations (1965 - 2021)

Sri Lanka Planetarium

Universal Projector | Night Sky Passage

Annular Solar Eclipse - Dec 2019

Annular solar eclipse observation camp organized in Mullaitivu

Water Rocket Competition

Water rocket competiotion for AstroIT students

Water Rocket Competition

Godagama Subharathi Mahamathya Maha Vidyalaya

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International Asteroid Day 2021On 30th June 2021, a webinar on Asteroids will be conducted by Planetarium Lecturer Mr. Yasith Ramawickrama. This event is organized by the Sri Lanka Planetarium cel...

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Penumbral Lunar EclipseThere will be a penumbral lunar eclipse can witnessing the Sri Lankan on May 26th 2021, where the Vesak Full Moon Poya day. During a lunar eclipse, the moon moves through th...

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NOTICE! Due to the current situation caused by spreading of COVID-19 (Corona Virus) all public gatherings should be minimized. Therefore, all shows of the Sri Lanka Planetarium will...

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On 19th Monday 2021, NASA’s Ingenuity flew on Mars becoming the first ever aircraft to attempt and succeed in a powered, controlled flight on another planet. Ingenuity is a helicopter developed by NASA’s JPL Caltech, as a proof of the concept of powered flight on extra-terrestrial worlds, thus it did not carry any science equipment.

Most of this helicopter is built with off-the-shelf parts that are readily available. It consists of a Li-ion battery pack that stores energy produced by the solar panels on board the helicopter. Among sevaral motors the motor that drives the propellers is a brushed DC motor and there are powers two propellers. The propellers are specially designed for the Martian environment. The propellers have a large wing span (1.2 m) and a steeper angle of attack (unlike the quad-copters propellers we see here on Earth) considering the low air pressure at the Martian surface. The propellers are made with carbon fibre to reduce weight and increase the strength. The two propellers rotate in the opposite directions to counter the rotational torque produce by each other.

On 19th at 07:34 (GMT) Ingenuity became airborne, and it stayed in air for 39.1 seconds, with 30 second stable hovering 3 metres above the Martian surface. Although Ingenuity can be controlled from Perseverance rover, this first flight was an autonomous test flight and all the steps were carried out by the on-board computer.

Ingenuity Helicopter captured this image of its shadow on the Martian surface.

Image credit: NASA/JPL-Caltech

Image credit: NASA/JPL-Caltech

Artist's concept

Image credit: NASA/JPL-Caltech

Last Updated on Tuesday, 20 April 2021 06:05  

Sun-Moon Rise / Set

Sunrise   06.00
Sunset   18.07
Moonrise   00.55
Moonset   13.41
Moonphase   image

Natural Phenomena and Space Events

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