Old horoscope signs dates. Zodiac sign might have changed for good. According to available information, NASA recently updated the astrological signs for the first time in 2,000 years. The implication of this is that a whopping 86% now have a different zodiac sign. NASA.gov brings you the latest images, videos and news from America's space agency. Get the latest updates on NASA missions, watch NASA TV live, and learn about our quest to reveal the unknown and benefit all humankind.

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Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer.

2021 April 27

Animation: Black Hole Destroys Star
Video Illustration Credit: DESY, Science Communication Lab

Explanation: What happens if a star gets too close to a black hole?The black hole can rip it apart -- but how?It's not the high gravitational attraction itself that's the problem -- it's the difference in gravitational pull across the star that creates the destruction. In the featured animated video illustrating this disintegration, you first see a star approaching the black hole. Increasing in orbital speed, the star's outer atmosphere is ripped away during closest approach. Much of the star's atmosphere disperses into deep space, but some continues to orbit the black hole and forms an accretion disk.The animation then takes you into the accretion disk while looking toward the black hole.Including the strange visual effects of gravitational lensing, you can even see the far side of the disk. Finally, you look along one of the jets being expelled along the spin axis. Theoretical models indicate that these jets not only expel energetic gas, but create energetic neutrinos -- one of which may have been seen recently on Earth.

Tomorrow's picture: polaris deep field < Archive Submissions Index Search Calendar RSS Education About APOD Discuss >

Authors & editors: Robert Nemiroff(MTU) &Jerry Bonnell (UMCP)
NASA Official: Phillip NewmanSpecific rights apply.
NASA WebPrivacy Policy and Important Notices
A service of:ASD atNASA /GSFC
&Michigan Tech. U.

Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer.

2021 April 27

Animation: Black Hole Destroys Star
Video Illustration Credit: DESY, Science Communication Lab

Explanation: What happens if a star gets too close to a black hole?The black hole can rip it apart -- but how?It's not the high gravitational attraction itself that's the problem -- it's the difference in gravitational pull across the star that creates the destruction. In the featured animated video illustrating this disintegration, you first see a star approaching the black hole. Increasing in orbital speed, the star's outer atmosphere is ripped away during closest approach. Much of the star's atmosphere disperses into deep space, but some continues to orbit the black hole and forms an accretion disk.The animation then takes you into the accretion disk while looking toward the black hole.Including the strange visual effects of gravitational lensing, you can even see the far side of the disk. Finally, you look along one of the jets being expelled along the spin axis. Theoretical models indicate that these jets not only expel energetic gas, but create energetic neutrinos -- one of which may have been seen recently on Earth.

Nasa Astrology Signs

Tomorrow's picture: polaris deep field < Archive Submissions Index Search Calendar RSS Education About APOD Discuss >

Nasa Astrology Calendar

Authors & editors: Robert Nemiroff(MTU) &Jerry Bonnell (UMCP)
NASA Official: Phillip NewmanSpecific rights apply.
NASA WebPrivacy Policy and Important Notices
A service of:ASD atNASA /GSFC
&Michigan Tech. U.

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