9 July 2025
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Month: August 2021

Observing

Watch as the Moon blots out bright stars

31 August 2021 Mark Armstrong

Watching a bright star disappearing or reappearing from occultation behind the Moon’s limb is always an exciting observation to make. This week there are back-to-back events involving two of the brightest stars to be occulted this year.

Picture This

The mesmerizing outskirts of NGC 4603 – a key galaxy in Hubble’s ‘key project’

30 August 2021 Astronomy Now

The spiral arms of galaxy NGC 4603 are home to multiple Cepheid variable stars, “standard candles” that helped astronomers pin down the age of the universe in one of the Hubble Space Telescope’s first major projects.

News

In major milestone, James Webb Space Telescope testing complete

30 August 2021 Astronomy Now

Engineers have completed testing of the James Webb Space Telescope and are preparing the observatory for shipment to Kourou, French Guiana, for launch.

News

Fastest-moving asteroid flies closer to Sun than Mercury

23 August 2021 Astronomy Now

Astronomers have found an asteroid, or possibly an extinct comet, in a high-stress orbit carrying it closer to the Sun than any other body in the solar system.

Picture This

A flawless spiral galaxy in Aries an oasis of light in a spiralling sea of stars

20 August 2021 Astronomy Now

A tilted spiral galaxy, showing off beautifully symmetric arms tightly wrapped around a brilliant core, provides a spectacular target for the Hubble Space Telescope.

News

A stunning vista from the Curiosity Mars rover captures changing environment

20 August 2021 Astronomy Now

NASA’s Curiosity rover beams back a stunning panorama from the slopes of Mount Sharp showing signs of transition between past and present environments.

Focus on

Everything you need to know about planet Venus

18 August 2021 Astronomy Now

The second planet from the Sun, Venus is often described as Earth’s evil twin, with a climate that has dramatically diverged from Earth’s.

Focus on

Everything You Need to Know About Planet Mercury

18 August 2021 Astronomy Now

The innermost planet, Mercury, may be the smallest in the Solar System, but it’s also home to some big surprises.

Observing

Dominant Jupiter comes to opposition

17 August 2021 Mark Armstrong

Mighty Jupiter, the king of the planets and the most observer-friendly planet of all, comes to opposition on the night of 19/20 August (Thursday night/Friday morning).

Picture This

M61, a face-on titan of the Virgo galaxy cluster, reveals its star-studded structure

17 August 2021 Astronomy Now

One of the largest members of the Virgo galaxy cluster, M61 presents a spectacular face-on view of densely populated spiral arms and a brilliant stellar nucleus hosting a supermassive black hole.

Posts pagination

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News Headlines

  • universe
    Is the Hubble Tension Resolved?
    9 June 2025
  • The Universe
    Universe’s end – sooner rather than later
    16 May 2025
  • T Coronae Borealis
    A faint star will reveal itself as it throws a hissy-fit
    26 March 2025
  • Saturn
    Saturn’s Rings to “Disappear”
    24 March 2025
  • Big Bang
    The Lithium Problem
    17 March 2025
  • Home
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    • About
    • Current Issue
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      • August last issue
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  • Reviews
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  • Spaceflight Now
  • Shop
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