Emma’s first encounters with a road bike were in between swimming and running. Soon after competing for GB in the World Age Group Triathlon Championships in Edmonton in 2001 she saw the light and decided to focus on cycling. There's an optional remote trigger too – I might be tempted at the right price, but that's just an added layer of convenience, not a criticism of the existing switch. Obviously, if you start playing with the VLS, your runtimes will vary from those stated in the tech info below. It becomes guess work really, but the indicators mentioned above are really helpful here. Okay, on its 450 lumens high constant setting, battery life is nothing to shout about. The 1.5hr run-time was sufficient to get me home easily, even after riding to work with the light flashing, but chances are you'll have to remember to charge it between rides.

It's the same price as the Ravemen CR1000 which comes with lower overall output and shorter battery life in like-for-like modes. And while you also get a remote control, there's no helmet mount. The Moon Vortex Pro 1300 has seen a boost in lumens for 2020, and while that impacts burn-times a bit, the adjustability of the VLS system means that you have total control over the balance brightness levels and battery life. With plenty of accessories in the box, the Moon is quite the performance bargain too. G. Jeffrey Taylor (November 22, 2005). "Gamma Rays, Meteorites, Lunar Samples, and the Composition of the Moon". Planetary Science Research Discoveries. Run times in steady modes, just like the outputs, have gone up from those on the 2019 light. The flashing modes have paid the price here, though – while their outputs stay the say, their runtimes have dropped a little. Battery life is good, and I often achieved in excess of all of the claimed burn times I tested by around 10%. You can follow progress of how much juice you have left by way of the matrix display, which also tells you what mode you are in.There is an auto mode, which turns the light on and off in whichever of the light's seven settings you choose, depending on how dark/bright the conditions. Some will appreciate this (George found it 'interesting' when he reviewed the slightly lower power non-Pro Moon Meteor-X Auto), but I'm pretty indifferent to it. I'm sure there's an application for it, I just never found it. All six of the Apollo missions on which samples were collected landed in the central nearside of the Moon, an area that has subsequently been shown to be geochemically anomalous by the Lunar Prospector mission. In contrast, the numerous lunar meteorites are random samples of the Moon and consequently provide a more representative sampling of the lunar surface than the Apollo samples. Half the lunar meteorites, for example, likely sample material from the farside of the Moon. Aside from the solid beam modes there are also four flashing ones at varying brightness, two for night-time use and one Day Flash mode. This is a double pulse at 700 lumen, ideal for getting noticed when filtering through city traffic. You also get an SOS setting. About one in every thousand newly discovered meteorites is a lunar meteorite, [11] whereas the vast majority of meteorites are from the asteroid belt. In the early 19th century most scientists believed that all meteorites falling towards the Earth were from the Moon. Although today supported only by a minority of researchers, there are also theories that tektites are from the Moon and should therefore also be regarded as lunar meteorites. However, most scientists regard such theories as outdated. [ citation needed] Private ownership [ edit ] A privately owned 11 milligrams (0.17gr) (2.2 by 2.0 millimetres (0.087in ×0.079in)) piece of the lunar meteorite NWA 4483 I used it mainly on fairly well-lit London roads, but also took it out to very unlit Kent lanes at dusk and it was adept in both, although I wouldn't take it as my sole light in unlit environments.

The most interesting element of the light is the auto mode. The light can detect the lighting conditions and either turn on or off. I found the light would generally turn on straight away when it detected the dark, and took around 30 seconds to turn itself off. It generally worked well, though I would have liked it to come on sooner, especially during dark mornings. MIDAS was able to confirm the flash and its precise location on the moon from each of the three observatories, Madiedo said, adding that he has tried to capture this rare phenomenon for years without any success. I was very surprised when the software that scans the images to locate these events notified me that we had an impact,” he said. “But I was also really happy and excited to see that, at the end, the effort was rewarded.” But if you can't wait until then, here's some good news: A far more prolific meteor shower is coming our way in less than a month: The December Geminids, now considered to be the best meteor shower of the year, producing over 100 per hour. They are expected to peak on Wednesday night, Dec. 13. Space.com will provide you with all the details as we get closer to that date. So, stay tuned! However, the Moon does not have that type of significant atmosphere meaning that meteors that would burn up above Earth can strike the lunar surface in large explosions.Most lunar meteorites are launched from the Moon by impacts making lunar craters of a few kilometers in diameter or less. [6] No source crater of lunar meteorites has been positively identified, although there is speculation that the highly anomalous lunar meteorite Sayh al Uhaymir 169 derives from the Lalande impact crater on the lunar nearside. [7] [8] I found all the flash modes really effective. The Flash 1 and Steady Flash certainly grab the attention of other roads users in low light, while the mode designated solely for day use lasts 61 hours (on the default 400 lumen setting). That's a great duration for a striking, 'be-seen' mode. Meteoroids collide with Earth every day, but the vast majority of them burn up as they enter the planet’s atmosphere. The two look pretty identical in terms of power on the beam comparison (see below), but out on the road the Moon just has a more usable output thanks in part to the 'whiter' light, and is much more user-friendly. It's a really well built unit too. Verdict Currently using the earlier white-only version and it is a good light and i would buy one again for sure. The ability to programme modes would be an added bonus for sure, my one is a scroll through the options version, though at least the flash and steady mode are kept seperate. I have dropped it a good few times and it is still running well.

Starry sky over Hora Mountain in Bayingoleng Mongolian Autonomous Prefecture, Northwest China's Xinjiang Uygur Autonomous Region, on the early morning of Nov. 17, 2021. (Image credit: Xue Bing / Costfoto/Future Publishing via Getty Images) A meager year in 2023 The meteors are caused by periodic Comet Tempel-Tuttle, which sweeps through the inner solar system every 33.3 years. Each time the comet passes closest to the sun it leaves a "river of rubble" in its wake; a dense trail of dusty debris. A meteor storm becomes possible only if Earth were to score a direct hit on a fresh dust trail ejected by the comet over the past couple of centuries. Bright white LEDs trump the older yellowish halogen bulbs pretty much everywhere except when it is foggy. Even on their lowest settings all you end up with is a load of glare as it lights up the cloud in front of you rather than the road.

The Vortex consistently charges from flat in about four hours – more than the claimed 3.4hrs – via the supplied USB C cable. That it has a yellow trim is great - it stands out from all the other charging cables, and helps you avoid taking the wrong one. Flash 1 gives 100 lumens which is enough to get you noticed in an urban environment at night, with a 400-lumen Flash 2 to get you noticed in the daylight. The battery will last 125hrs for Flash 1 and 220hrs for Flash 2 – its flash pattern means that the LED isn't on as much as Flash 1. For the quality of the build, the outputs and battery life, the Meteor Dual is a good option for money, in my eyes. Head, James N.; Melosh, H. Jay; Ivanov, Boris A. (2002). "High-speed ejecta from small craters". Science. 298 (5599): 1752–1756. Bibcode: 2002Sci...298.1752H. doi: 10.1126/science.1077483. PMID 12424385. S2CID 2969674. I used this on PBP with a cache battery and running at setting 3 (around 300/400w) on mine lasted through the night, so three topups and I was well lit for four nights running. I have never used 1200w on the road. Setting 3 was good enough for unknown roads at decent speeds.

The light has an IPX7 rating. It's withstood very heavy showers, prolonged rain and bike washes and remained completely unaffected. Switch Pros: Yellow LED is great at reducing glare in fog and misty conditions; battery life; loads of customisation The Moon Meteor-X Auto is an innovative light that brings together strong battery life and a powerful beam at a very reasonable price, but it's not the simplest to operate.

The remote button plugs in underneath and is attached with a Velcro strap. Its lead is 35cm long, which is more than enough for a road bike and should be sufficient for most mountain bike bars too. However, I did find that even when done up as tight as possible the button would slide around the bar, the small rubber pad not enough to keep it in place. I fixed this by using a cable tie in place of the strap. With a water resistance rating of IPX4, the Moon should shrug off water spray from any angle and it does just that, with loads of muddy testing on gravel bikes and heavy rain on the road, and, just to be sure, it's been given the power shower treatment too. Thanks to well-covered charge points and electronics there are no issues to report. Gnos, E.; Hofmann, B. A.; Al-Kathiri, A.; etal. (2004). "Pinpointing the source of a lunar meteorite: Implications for the evolution of the Moon". Science. 305 (5684): 657–659. Bibcode: 2004Sci...305..657G. doi: 10.1126/science.1099397. PMID 15286369. S2CID 29316907. Overall I liked many elements of this light and the automatic feature is really interesting, but it is complicated to use. It has a decent battery life, strong mounting system, and good light output, but is slightly let down by the frustration caused by trying to find your favourite mode. Verdict For maximum output on dry roads I did find using both LEDs wasn't quite as good as using a powerful light with just white LEDs, as the mix of the white and yellow just takes the edge off the sharpness of the beam, but it's a small price to pay for use in rubbish weather.