Two siblings, aged eight and six, drowned in the Tawi river in Jammu, officials said on Tuesday.

The siblings — eight-year-old Nadiya and six-year-old Ismael — were grazing cattle on the riverbank Monday evening when they slipped and fell in the river in the Har Ki Pauri area of Jammu city.

Their bodies were recovered Tuesday evening during a rescue operation jointly launched by the police and the State Disaster Response Force.

The bodies were handed over to their family after legal formalities, the officials said. 

Scientists have made a remarkable discovery from a black hole that lies more than 25,000 light-years from Earth and is four million times more massive than our Sun. Astrophysicists Gustavo Magallanes-Guijon and Sergio Mendoza of the National Autonomous University of Mexico have recorded the supermassive hole “pulsing” every 76 minutes like clockwork, as per a report in Science Alert.

The gamma-ray of the black hole named Sagittarius A* is fluctuating and is similar in periodicity in changes to the black hole’s radio and X-ray emission. The scientists therefore suggest that there could be an orbital motion of “something” moving around the black hole. 

As per the outlet, there is currently no radiation that can be detected from black holes. The shadows are so black that they are not visible to the telescopes used to examine the light that streams through the universe. However, it is to be noted that several events can occur in the severe gravitational regime outside the black hole’s event horizon. Astronomers have also detected a pattern from the region of the blackhole as light is emitted in a multitude of wavelengths and “the strength of that light varies significantly over time.”

In 2022, it was found that radio waves vary around 70 minutes. Further, a 2017 study revealed that the X-ray flares from the black hole had a periodicity of 149 minutes. That is almost twice as periodicity of the variations in radio waves and gamma rays.

In 2021, Sagittarius A* was connected to gamma radiation. Both scientists believed that the gamma-ray data may contain some mysteries. They found that every 76.32 minutes, according to the black hole “lets out a flare of gamma radiation” which was dubbed as the “most energetic wavelength range of light in the universe”.  According to the researchers, the periodicity of the radio flare and the gamma-ray flare are nearly identical. It seems unlikely that the X-ray flare’s double periodicity at 149 minutes is a coincidence, indicating that the X-ray flare’s periodicity is a harmonic of the radio and gamma-ray periodicities.

“Since the black hole itself emits no radiation, and such regular, repeated periodicity is often a sign of orbital motion, the physical mechanism is likely something orbiting the black hole,” the outlet noted. According to the 2022 study, the object in question is most likely a blob of hot gas bound together by a strong magnetic field that accelerates particles in a synchronic manner while also releasing radiation.

The orbital distance of that blob from the black hole is similar to Mercury’s around the Sun. However, it’s moving at a very fast speed, around 30 per cent the speed of light, with an orbital period of 70 to 8- minutes. According to the astrophysicists, their findings support that interpretation of the radio data, indicating that the gas blob is generating light at several wavelengths.

Hitting out at “developed nations” who press on imposing regulations on the usage of fossil fuels, Union Minister for Power and New and Renewable Energy RK Singh said that these nations are responsible for the poor state of the environment at present and India will not compromise on its energy needs.

“Those developed nations who lecture us on imposing regulatory norms on the usage of fossil fuels today are responsible for the poor state of the environment. Around 85 per cent of the carbon dioxide load in the atmosphere is because of industrialisation which was started by these developed countries,” Singh said while speaking to reporters while inaugurating the Power Ministry Pavilion at the 42nd India International Trade Fair on Tuesday.

The Power Minister said that India’s per capita emissions are one-third of the world average while those of the developed countries are three times the world average.

“India contributes to 17 per cent of the world population, while our contribution to carbon dioxide load is only 3.5 per cent. Our per capita emissions are one-third of the world average, whereas the developed countries are three times the world average,” Singh said.

The Power Minister said that the developed countries need to cut down their emissions first.

“It is the developed countries that need to cut down their emissions first before talking about anything else,” he said.

The Union Minister said that India will not be compromising on its energy needs since the developed nations have prospered by burning fossil fuels.

“Yes, we are using coal and will continue to do so because we need electricity. We won’t compromise on the availability of electricity. You have developed by using fossil fuels. We need to develop now,” Singh said.

The Power Minister said that India needs cement and steel to construct crores of square meters. However, he said that India will develop with responsibility.

“We have to construct crores of square meters. We need cement and steel to construct residential places, commercial places and industries. However, we will develop with responsibility,” he said.

Singh said that India has achieved its Nationally Determined Contributions pledge ahead of its time limit and has further revised its targets.

“We have pledged in the NDCs (Nationally Determined Contributions) that by 2030, 40 per cent of our total electricity generation will be from renewable sources. We have achieved that in 2021 itself,” the Power Minister said.

“We had said that we will be decreasing our emissions intensity by one-third by 2030. We achieved that in 2019. In Glasgow, we said that by 2030 we will decrease our emissions intensity by 45 per cent and by 2030 our total electricity generation capacity will be from renewable energy. We will achieve that,” Singh added.