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NASA and the ESA have used the Hubble Space Telescope to observe the phenomena occurring in space. One of the observations made by the Hubble was of the Stingray nebula that was seen fading at an unexpected rate.
NASA has recently released archive photos of the Hubble’s observation of the Stingray nebula, also known as Hen 3-1357. The astronomers compared the Nebula from photos taken by the Hubble in 1996 and 2016 and noticed the drastic changes in shape and brightness that occurred in a span of 20 years. The recent photos have also shown how the characteristics that gave the nebula its nickname has now almost completely disappeared.
“This is very, very dramatic and very weird,” said Dr. Martin Guerrero of the Instituto de Astrofisica de Andalucia. “What we’re witnessing is a nebula’s evolution in real-time. In a span of years, we see variations in the nebula. We have not seen that before with the clarity we get with this view.”
Astronomers from NASA believe that the reason for the dimming of this particular nebula was because of the change in emissions of nitrogen, oxygen, and hydrogen. The oxygen emissions, for one, have been found to have decreased by almost 1,000 from 1996 to 2016. Previous observations have already suggested that a nebula’s brightness can evolve; this discovery confirms the theory. Dr. Guerrero also noted that because of the Hubble’s optical stability, there is a big chance that the brightness of the nebula changes over time.
Meanwhile, among the indicators that built up the conspiracy theory of NASA’s Apollo 11 mission, being fake, was the appearance of the US flag that was planted on the lunar surface. Although the conspiracy theory has widely been refuted, a UK-based space center has explained the reason for the flag appearing to flap and wave in space despite there being no gravity.
Experts from the space center explained that the flag’s so-called “movements” were caused by the astronauts themselves rather than the wind. They added that the flag was already “disturbed” as it was being planted onto the lunar surface, and the lack of gravity maintained the shape.
