Search found 5705 matches

by brian livesey
Thu Apr 22, 2021 6:47 am
Forum: Observing
Topic: Lyrid Meteor Shower
Replies: 7
Views: 41

Re: Lyrid Meteor Shower

Then, there’s Attenborough’s “meteor” that wiped out the dinosaurs :roll: .
by brian livesey
Tue Apr 20, 2021 8:40 pm
Forum: General chat
Topic: Space Junk Is Our New Tragedy of the Commons
Replies: 2
Views: 68

Re: Space Junk Is Our New Tragedy of the Commons

Apparently, over 60% of satellites are “commercial”, so we can reckon that a proportion of them are for trivial purposes such as the gambling industry.
Now, it’s being said that there are so many rocket launches that they contribute significantly to global warming.
by brian livesey
Tue Apr 20, 2021 5:53 pm
Forum: Astrophysics
Topic: The Webb Telescope and dark matter
Replies: 0
Views: 18

The Webb Telescope and dark matter

Researchers at Durham University with take part in an international project, the Cosmos-Webb programme, that will survey a region near the constellation Sextans to trace the relationship between dark matter and remote galaxies farther back in time. They will utilise the James Webb Space Telescope (J...
by brian livesey
Mon Apr 19, 2021 3:35 pm
Forum: Gallery
Topic: The Sun - 18th April - Just for a laugh !
Replies: 2
Views: 18

Re: The Sun - 18th April - Just for a laugh !

That 88mm refractor yields good images Cliff. Some of your gear is from Optic Star. Due you know if the shop is still there, or is it all sold on the Web these days? I found the shop interesting to browse through. I purchased a PST and zoom eyepiece to use with it from them.
by brian livesey
Mon Apr 19, 2021 3:25 pm
Forum: Observing
Topic: Vesta in April
Replies: 12
Views: 203

Re: Vesta in April

That’s a coincidence Mike. I too am suffering from severe vertigo, and seem to have the symptoms of ME. A blood test is being analysed. Not good news for skywatching. There’s the option of lying on our backs to get covered in slugs :wink: .
by brian livesey
Mon Apr 19, 2021 3:13 pm
Forum: Space exploration
Topic: Mars ‘copter technical hitch
Replies: 2
Views: 86

Re: Mars ‘copter technical hitch

The first successful test flight, lasting under a minute, was performed with the ‘copter at 8:30am our time. More flights are to follow when the data from the first flight has been analysed. The flight established that lift is possible for a drone in Mars’s rarified atmosphere with the ‘copter’s rot...
by brian livesey
Fri Apr 16, 2021 1:41 pm
Forum: Observing
Topic: Jupiter + Saturn from bedroom window
Replies: 14
Views: 188

Re: Jupiter + Saturn from bedroom window

When I observe Saturn with a low magnification, it appears oval-shaped rather than as a disc. Saturn’s light seems tired compared to Jupiter’s brilliance, so it might have had a nightcap effect for Mike.
by brian livesey
Tue Apr 13, 2021 8:22 pm
Forum: Space exploration
Topic: Mars ‘copter technical hitch
Replies: 2
Views: 86

Mars ‘copter technical hitch

NASA has announced that its Ingenuity helicopter has had its first attempted flight into Mars’s rarified atmosphere delayed until at least tomorrow, due to a technical problem. The problem was discovered when the ‘copter was having its rotators tested. If successful, Ingenuity will be the first mach...
by brian livesey
Tue Apr 13, 2021 5:40 am
Forum: Gallery
Topic: Sunspots
Replies: 2
Views: 1092

Re: Sunspots

Looks like a Sun flower, which is appropriate, don’t you think?
by brian livesey
Mon Apr 12, 2021 6:03 pm
Forum: Gallery
Topic: The SUN - 11th April
Replies: 3
Views: 93

Re: The SUN - 11th April

Does the white spot on the Sun have an official classification? It looks like a flaring site.
by brian livesey
Mon Apr 12, 2021 12:50 pm
Forum: Visual Satellite Observing
Topic: ISS leaking from old age ..
Replies: 2
Views: 100

Re: ISS leaking from old age ..

They could replace modules at the station with new ones. Originally, the ISS was intended to be considerably bigger, but mounting costs set a limit to its eventual size.
by brian livesey
Mon Apr 12, 2021 12:42 pm
Forum: General chat
Topic: Another possible meteorite fall
Replies: 4
Views: 195

Re: Another possible meteorite fall

Early life was wearing hard hats at the time :wink: . Seriously though, a current theory for the origin of life says that the molten masses below craters formed by asteroid strikes cooled and created geothermal springs, rich in the nutrient chemicals necessary for life. Apparently, it only happened ...
by brian livesey
Sun Apr 11, 2021 5:35 pm
Forum: Observing
Topic: Solar proms
Replies: 2
Views: 103

Re: Solar proms

I should add that the observation I made was supplemented by a double-stack observation. I attached the Lunt LS50f to the PST. This revealed a white patch on the solar disc. Lunt claims that it’s solar components don’t work with other solar makes, but the LS50f etalon works well with the PST, as it ...
by brian livesey
Sun Apr 11, 2021 11:11 am
Forum: Observing
Topic: Solar proms
Replies: 2
Views: 103

Solar proms

The Sun is still in boring mode it seems, with little to see except for proms. The last solar maximum showed lots of detail: sunspots, proms, filaments and flares. This time round the Sun is taking its time to emerge from full minimum. This morning I was able to image several proms in the PST with a...
by brian livesey
Sat Apr 10, 2021 5:38 pm
Forum: Visual Satellite Observing
Topic: ISS leaking from old age ..
Replies: 2
Views: 100

ISS leaking from old age ..

In 2019 an air leak was discovered in the International Space Station ( ISS ). Attempts to fix the leak have not been fully successful. Last year, technicians identified why cabin pressure had been affected. Other cracks where discovered in 2020 using an electron microscope and sealed, but there are...