At the center of the dense galaxy M60-UCD1, there is a supermassive black hole, whose weight is about 21 million times that of the sun.M60-UCD galaxy is about 150 million light years away from us, with a diameter of 300 light years, which is only 500 times the diameter of the Milky Way!It contains about 1.4 million stars.The strong gravitational field of the black hole distorts the light, forming a ring event horizon of the black hole.
On September 10, an active region of the sun experienced a flare with a level of X1.6 facing the Earth, followed by a coronal mass ejection.The flare lasted longer than usual and sent a lot of radiation into space.The picture was taken under extreme ultraviolet light wavelength.
NGC 6872 is a galaxy in the constellation Peacock.Because a smaller galaxy named IC 4970 above it interacts with it, its shape is somewhat unusual.The distance between NGC 6872 and the Earth is about 3 million light years, while NGC 6872 is about 500000 light years away from both ends of the galaxy, which is the second largest spiral nebula found so far.
The DHC-3 Otter aircraft performs Operation IceBridge in Alaska mountain glaciers.In the past decades, the global average temperature has been rising, and the temperature in the Arctic is warming twice or three times the average.As the summer in the region is coming to an end, NASA is trying to study the impact of temperature rise on the Arctic.
Hurricane Odier made landfall in Cabo San Lucas, Mexico.According to the National Hurricane Center of the United States, the wind speed was about 204 kilometers per hour when Audil landed.The Moderate Resolution Imaging Spectroradiometer (MODIS) of NASA's Terra satellite captured this image at noon on September 14, when the hurricane was still southeast of the California Peninsula.
IC 559 is an irregular galaxy in the constellation Leo, which is different from the galaxies commonly seen.IC 559 has an irregular shape and looks like a bright blue "splash", which is very distinctive and charming.It looks very sparse, but it is actually full of gas and dust, in which a large number of new stars are generated.
On September 10, the sun sent out a significant solar flare with its peak at 1:48 p.m. EDT.The Solar Dynamics Observatory captured images of the event.Solar flares are powerful radiation pulses, in which harmful radiation cannot pass through the earth's atmosphere and endanger human beings.However, when the flare is strong enough, it will disturb the GPS and other communication signals transmitted in the atmosphere.
It is during the fire season in California, the United States. Because of drought and heat, it is easy to cause forest fires.NASA's Aqua satellite took this picture on September 15.Use the thermal infrared band detection of MODIS to list the fire area in red in the figure.
This picture was taken by the Hubble Space Telescope. It shows a beautiful spiral galaxy named PGC54493 in the constellation Serpentius.Astronomers have studied a very interesting phenomenon called weak gravitational lensing. This galaxy is just a part of this cluster.
On August 22, the Moderate Resolution Imaging Spectrometer (MODIS) of NASA Land Satellite captured a sunny image of Iceland in summer.Most of Iceland's winter snow has melted, revealing green vegetation.The rugged north peak retains the snow cap, and the white part further south is the location of the glacier.