White Dwarfs | Simple Site

Astrophysics Division

Goddard Space Flight Center

Hubble Space Telescope

The Kuiper Belt

NASA’s Hubble Sees White Dwarf Eating Piece of Pluto-Like Object

In our nearby stellar neighborhood, a burned-out star is snacking on a fragment of a Pluto-like object. With its unique ultraviolet capability, only NASA’s Hubble Space Telescope could identify that this meal is taking place. The stellar remnant is a white dwarf about half the mass of our Sun, but that is densely packed into […]

Posted September 18, 2025

Chandra X-Ray Observatory

Hubble Space Telescope

Marshall Astrophysics

Marshall Space Flight Center

Nebulae

Planetary Nebulae

Stars

X-ray Signal Points to Destroyed Planet, Chandra Finds

A planet may have been destroyed by a white dwarf at the center of a planetary nebula — the first time this has been seen. As described in our latest press release, this would explain a mysterious X-ray signal that astronomers have detected from the Helix Nebula for over 40 years. The Helix is a […]

Posted March 4, 2025

Active Galaxies

Galaxies, Stars, & Black Holes

Goddard Space Flight Center

Jet Propulsion Laboratory

Neil Gehrels Swift Observatory

NICER (Neutron star Interior Composition Explorer)

NuSTAR (Nuclear Spectroscopic Telescope Array)

Supermassive Black Holes

XMM-Newton (X-ray Multi-Mirror Newton)

Astronomers Catch Unprecedented Features at Brink of Active Black Hole

International teams of astronomers monitoring a supermassive black hole in the heart of a distant galaxy have detected features never seen before using data from NASA missions and other facilities.

Posted January 13, 2025

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222

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5

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27

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2

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17

125

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13

9

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1

5

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3

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8

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1

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19

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132

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3

27

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3

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7

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1

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5

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58

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3

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1

32

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2

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4

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11

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91

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99

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1

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1

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183

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1

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11

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5

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3

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21

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3

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10

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1

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24

10

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2

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132

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3

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44

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10

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1

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8

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18

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1

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5

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6

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3

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17

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5

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3

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1

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1

1

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2

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1

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22

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4

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29

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8

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1

49

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129

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10

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1

2

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5

19

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4

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11

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55

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27

6

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2

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210

Anil Menon

1

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5

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1

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1

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3

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2

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7

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9

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1

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24

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2

2

1

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1

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4

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19

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8

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3

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4

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4

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2

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1

STS-51D

1

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1

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1

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9

6

Galaxies, Stars, & Black Holes

73

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