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Satellite EOS-01
Why is it in News?
- ISRO would launch its latest earth observation satellite EOS-01 in November.
Details:
- This is the first launch by the Indian Space Research Organisation since the COVID-19-induced lockdown.
- EOS-01:
(1) It is a Earth Observation satellite.
(2) It is intended for applications in agriculture, forestry and disaster management support.
(3) It will be launched with PSLV.
- Gravitational Waves:
(1) These were first detected in September 2015.
(2) A gravitational wave is an invisible (yet incredibly fast) ripple in space.
(3) Gravitational waves travel at the speed of light (186,000 miles per second).
(4) These waves squeeze and stretch anything in their path as they pass by.
(5) Einstein had predicted that something special happens when two bodies—such as planets or stars—orbit each other. He believed that this kind of movement could cause ripples in space.
(6) The most powerful gravitational waves are created when objects move at very high speeds.
(7) Some examples of events that could cause a gravitational wave are:
(a) when a star explodes asymmetrically (called a supernova)
(b) when two big stars orbit each other
(c) when two black holes orbit each other and merge
LIGO:
- It stands for Laser Interferometer Gravitational Wave Observatory.
- It is a large-scale physics experiment and observatory to detect cosmic gravitational waves.
- Two large observatories were built in the United States with the aim of detecting gravitational waves by laser interferometry.
- These observatories use mirrors spaced four kilometers apart which are capable of detecting a change of less than one ten-thousandth the charge diameter of a proton.