Stars

The Sun shows us how sunspots appear dark against a star. Credit: SOHO (ESA & NASA)

Observing spots on distant stars

The Pleiades, as seen through a telescope. This cluster is known as 'The Seven Sistsers' in Greek and also Aboriginal mythology. NASA, ESA, AURA/Caltech, Palomar Observatory The science team consists of: D. Soderblom and E. Nelan (STScI), F. Benedict and B. Arthur (U. Texas), and B. Jones (Lick Obs.)

A beginner’s guide to stars

Andromeda Galaxy, M31

Andromeda Galaxy’s last meal

S5-HVS1 has been speeding away ever since its dust-up with black hole Sgr A* 4.8 million years ago. Credit: hadzi3/iStock/Getty Images, Vadim Sadovski/iStock/Getty Images.

Speeding star reveals the secrets of the Milky Way

comparison of the sizes of small stars to the largest planets in our Solar System. EBLM J0555-57Ab, the newly found star, is only slightly larger than Saturn.
Credit: Amanda Smith, University of Cambridge

Smallest known star discovered

RADIO ASTRONOMY_PODCAST_2018

Radio Astronomy Podcast Lunar eclipses, 2019 space missions and green stars

The Orion constellation: differences in colour give a very subtle hint as to how stars can be vastly different. Credit: Zdeněk Bardon/ESO

A guide to stellar spectral classifications

When Neutron stars collide (artist's impression) Image Credit: NASA Goddard Space Flight Center/CI Lab

What are gravitational waves?

The act of a black hole destroying a star kick starts a chain of events which leads to a jet travelling at near light speeds. Image Credit: Sophia Dagnello, NRAO/AUI/NSF; NASA, STScI

Black hole seen destroying star for the first time

Galaxy cluster MACS J1149.5+2223 in an image captured with the Hubble Space Telescope. Inset is galaxy MACS1149-JD1, seen by ALMA as it existed 13.3 billion years ago. Red shows the distribution of oxygen; the most distant ever detected. Image Credit: ALMA (ESO/NAOJ/NRAO), NASA/ESA Hubble Space Telescope, W. Zheng (JHU), M. Postman (STScI), the CLASH Team, Hashimoto et al.

Stars formed 250 million years after Big Bang

Hubble images show the location of the most distant star ever observed. Left is part of the view of galaxy cluster MACS J1149.5+2223. The square shows where the star appeared in May 2016. Top right shows the position of the star, observed in 2011, while lower right shows the star undergoing the microlensing event in May 2016. Image Credit: NASA & ESA and P. Kelly (University of California, Berkeley)

Most distant star ever observed

An artist’s depiction of a FELT event. In the left image, a dying red star ejects mass into space. This creates a shell around the star. In the centre image, the star’s core explodes. In the right image, the supernova shockwave hits the shell, converting the energy into a burst of light. Image Credit: NASA, ESA, and A. Feild (STScI)

Fast-Evolving Luminous Transient: new type of exploding star observed

The first stars in the Universe were extremely massive, blue and bright. Image Credit: N.R.Fuller, National Science Foundation

Earliest stars in the Universe detected

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Black holes devour one star a year

An image of CK Vul, the remnant of a collision between two stars. The event launched radioactive molecules into space, as seen in the orange structure at the centrer. Credit: ALMA (ESO/NAOJ/NRAO), T. Kamiński & M. Hajduk; Gemini, NOAO/AURA/NSF; NRAO/AUI/NSF, B. Saxton

Colliding stars eject radioactive molecules